Returns not working - Telephone Assignment

[jen23il]

Having problems here. I've been trying to work this out on my own for the last several days but it' just not working.
I need this code to check my if statements and return either -5, -4, -3, -2, -1, or continue the rest of the functions.
The ToDigit functions and the AcknowledgeCall Functions do what their supposed to and the ReadDials asks the questions and takes in the numbers:
However it Does not error out per the if statements - it just keeps going.

What am I not seeing or understanding?
Your help is appreciated.

#include <iostream>
#include <ostream>
#include <iomanip>
using namespace std;

//Function Declaration
int ReadDials(char &n1, char &n2, char &n3, char &n4, char &n5, char &n6, char &n7, char &n8);
int ToDigit(char &digit);
void AcknowledgeCall(char n1, char n2, char n3, char n4, char n5, char n6, char n7, char n8);

int main()
{
	char n1, n2, n3, n4, n5, n6, n7, n8;
	n1 = ' ';
	n2 = ' ';
	n3 = ' ';
	n4 = ' ';
	n5 = ' ';
	n6 = ' ';
	n7 = ' ';
	n8 = ' ';

	int ErrorResult = 0;
		
	do
	{	
		ReadDials(n1, n2, n3, n4, n5, n6, n7, n8);
		/*	if (ErrorResult == -2)
			{
				cout << "ERROR - Phone number cannont begin with 0; Please Try Again." << endl;
				cout << "Enter a 8 digit telephone number: ";
				cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
			}
			if (ErrorResult == -3)
			{
				cout << "ERROR - Phone number cannont begin with 555; Please Try Again." << endl;
				cout << "Enter a 8 digit telephone number: ";
				cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
			}
	
		if (ErrorResult == -4)
			{
				cout << "ERROR - Hyphen is not in the correct position; Please Try Again." << endl;
				cout << "Enter a 8 digit telephone number: ";
				cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
			}*/
	AcknowledgeCall(n1, n2, n3, n4, n5, n6, n7, n8);
		
	} while (ErrorResult!=-5); 
	

}

//Function Definitions
int ReadDials(char &n1, char &n2, char &n3, char &n4, char &n5, char &n6, char &n7, char &n8)
{
	do
	{
	cout << "Enter a 8 digit telephone number: ";
	cin >> n1 >> n2;

	} while ((n1 != 'q') || (n1 != 'Q'));

	cin >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	cout << endl;

	
	if (n1 == 5 && n2 == 5 && n3 == 5)
	{
		cout << "ERROR - Phone number cannont begin with 555; Please Try Again." << endl;
		cout << "Enter a 8 digit telephone number: ";
		return -2;
		cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	}
	if (n1 == 0)
	{
		cout << "ERROR - Phone number cannont begin with 0; Please Try Again." << endl;
		cout << "Enter a 8 digit telephone number: ";
		return -3;
		cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	}
	if (n1 == '-' || n2 == '-' || n3 == '-' || n5 == '-' || n6 == '-' || n7 == '-' || n8 == '-')
	{
		cout << "ERROR - Hyphen is not in the correct position; Please Try Again." << endl;
		cout << "Enter a 8 digit telephone number: ";
		return -4;
		cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	}
	
	ToDigit(n1);
	ToDigit(n2);
	ToDigit(n3);
	ToDigit(n4);
	ToDigit(n5);
	ToDigit(n6);
	ToDigit(n7);

}

int ToDigit(char &digit)
{
char result;
result = ' ';
digit = toupper(digit);

switch (digit)
{
case 'A':
case 'B':
case 'C':
case '2':
result = '2';
break;
case 'D':
case 'E':
case 'F':
case '3':
result = '3';
break;
case 'G':
case 'H':
case 'I':
case '4':
result = '4';
break;
case 'J':
case 'K':
case 'L':
case '5':
result = '5';
break;
case 'M':
case 'N':
case 'O':
case '6':
result = '6';
break;	
case 'P':
case 'Q':
case 'R':
case 'S':
case '7':
result = '7';
break;
case 'T':
case 'U':
case 'V':
case '8':
result = '8';
break;
case 'W':
case 'X':
case 'Y':
case 'Z':
case '9':
result = '9';
break;
case '0':
	result = '0';
case '1':
	result = '1';
case '-':
	result = '-';

break;
default:
result=-1;
}
digit = result;

return result;

}
void AcknowledgeCall(char n1, char n2, char n3, char n4, char n5, char n6, char n7, char n8)
{
	cout << "Phone Number is: " << n1 << n2 << n3 << n4 << n5 << n6 << n7 << n8 << endl;

}

[jen23il]

Alright - I can get the if statements to check but I don't know how to incorporate the returns to be -5, and quit
-4 and cout error
-3 and cout corresponding error
-2 and cout corresponding error
-1 and cout corresponding error
New Question - I need to do an if statement (I think that's the method), that errors out to a -1 if there is a non letter or number entered (invalid entry)
Thanks again!
For anyone interested here is my updated code:

#include <iostream>
#include <ostream>
#include <iomanip>
using namespace std;

//Function Declaration
int ReadDials(char &n1, char &n2, char &n3, char &n4, char &n5, char &n6, char &n7, char &n8);
int ToDigit(char &digit);
void AcknowledgeCall(char n1, char n2, char n3, char n4, char n5, char n6, char n7, char n8);

int main()
{
	char n1, n2, n3, n4, n5, n6, n7, n8;
	n1 = ' ';
	n2 = ' ';
	n3 = ' ';
	n4 = ' ';
	n5 = ' ';
	n6 = ' ';
	n7 = ' ';
	n8 = ' ';

	int ErrorResult = 0;
		
	do
	{	
		ReadDials(n1, n2, n3, n4, n5, n6, n7, n8);
		/*	if (ErrorResult == -2)
			{
				cout << "ERROR - Phone number cannont begin with 0; Please Try Again." << endl;
				cout << "Enter a 8 digit telephone number: ";
				cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
			}
			if (ErrorResult == -3)
			{
				cout << "ERROR - Phone number cannont begin with 555; Please Try Again." << endl;
				cout << "Enter a 8 digit telephone number: ";
				cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
			}
	
		if (ErrorResult == -4)
			{
				cout << "ERROR - Hyphen is not in the correct position; Please Try Again." << endl;
				cout << "Enter a 8 digit telephone number: ";
				cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
			}*/
	AcknowledgeCall(n1, n2, n3, n4, n5, n6, n7, n8);
		
	} while (ErrorResult!=-5); 
	

	system("pause");

}

//Function Definitions
int ReadDials(char &n1, char &n2, char &n3, char &n4, char &n5, char &n6, char &n7, char &n8)
{
	cout << "Enter a 8 digit telephone number: ";
	cin >> n1;
	if ((n1 == 'q') || (n1 == 'Q'))
	{
		return -5;
	}

	cin >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	cout << endl;

	
	if ((n1 == '5') && (n2 == '5') && (n3 == '5'))
	{
		cout << "ERROR - Phone number cannont begin with 555; Please Try Again." << endl;
		return -2;
		cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	}
	if (n1 == '0')
	{
		cout << "ERROR - Phone number cannont begin with 0; Please Try Again." << endl;
		return -3;
		cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	}
	if ((n1 == '-') || (n2 == '-') || (n3 == '-') || (n5 == '-') || (n6 == '-') || (n7 == '-') || (n8 == '-'))
	{
		cout << "ERROR - Hyphen is not in the correct position; Please Try Again." << endl;
		return -4;
		cin >> n1 >> n2 >> n3 >> n4 >> n5 >> n6 >> n7 >> n8;
	}
	
	ToDigit(n1);
	ToDigit(n2);
	ToDigit(n3);
	ToDigit(n4);
	ToDigit(n5);
	ToDigit(n6);
	ToDigit(n7);
	ToDigit(n8);

}

int ToDigit(char &digit)
{
char result;
result = ' ';
digit = toupper(digit);

switch (digit)
{
case 'A':
case 'B':
case 'C':
case '2':
result = '2';
break;
case 'D':
case 'E':
case 'F':
case '3':
result = '3';
break;
case 'G':
case 'H':
case 'I':
case '4':
result = '4';
break;
case 'J':
case 'K':
case 'L':
case '5':
result = '5';
break;
case 'M':
case 'N':
case 'O':
case '6':
result = '6';
break;	
case 'P':
case 'Q':
case 'R':
case 'S':
case '7':
result = '7';
break;
case 'T':
case 'U':
case 'V':
case '8':
result = '8';
break;
case 'W':
case 'X':
case 'Y':
case 'Z':
case '9':
result = '9';
break;
case '0':
	result = '0';
	break;
case '1':
	result = '1';
	break;
case '-':
	result = '-';
break;
default:
result=-1;
}
digit = result;

return result;

}
void AcknowledgeCall(char n1, char n2, char n3, char n4, char n5, char n6, char n7, char n8)
{
	cout << "Phone Number is: " << n1 << n2 << n3 << n4 << n5 << n6 << n7 << n8 << endl;

}