I do I get in contact to find out to pay a bill that is outstanding balance?

I was refinancing our home and the Bank had told me that I had a outstanding balance with AT&T. I didn't know that I had a account with them until today. I need to find out how much it was. I need to get this balance paid so I can go ahead and do the refinancing. I appreciate the help from them. The account use to be in Kathy.G. Reynolds name.I had been married going on 6 years last name is Kathy.G. Meadows.