I have been sued by FIA in a credit card debt case. First of all I did not receive a demand letter. 2.When the suit was delivered I had no idea who FIA was. 3.The card name they were suing for was Bank of America (had not been resold). 4. The account number on the application, and the original motion was the wrong account number, different from what was on he billing statements. 5. Everything I had had Bank of America all over it. 6. I sent in a dispute letter certified mail, and never received anything back in return. But FIA is saying because I mailed it to the name and address listed on the billing instead of the account agreement it is null. Can you please tell me if any of this helps in any way with my case?