I had a student loan back in 2002, was finally paid off this summer and now I get a statement from citibank/XXXX XXXX XXXX saying I now owe {$18000.00} dollars, which is entirely false, I never owe anything close to that. I do some research and found out that Citibank/XXXX XXXX XXXX may be a Scam company. Please help me because they are threatening to sue me by another outside lawyer firm called XXXX XXXX XXXX XXXX XXXX , XXXX . Their infomation is- XXXX XXXX XXXX XXXX XXXX , XXXX . 
XXXX XXXX XXXX, XXXX . XXXX XXXX, MD XXXX XXXX thank you in advance for any help you can lend to me.