The 1-877-528-3499 phone number belongs to Collection Company of America. Their address is 4099 McEwen Dallas, TX. 75244. They are a collection agency for AT&T phone company. They have been calling my husbands work harassing him. They tell you that they have to collect the money all at once. They try to get your checking account information. You don't have to give them your social security number either. They looked up the account by the address. You can also make your payments to AT&T directly and bypass the collection company. They will tell you that you can't do that so that they can make their commission.
Caller: He didn't leave his name.