I had a delinquent account through XXXX XXXX XXXX XXXX. A collector called me over the XXXX yr collection time. Since I am working on my credit, we agreed on half the cost, {$1700.00} plus. I have record of payment complete. This was in XXXX or XXXX. On XXXX XXXX, I get a letter from First National Collection Bureau stating I owe {$3900.00}. However, this is an account number for a XXXX XXXX XXXX XXXX XXXX with my XXXX total. Furthermore, they used a name that I stopped using after my divorce from my first wife, nor have I ever owned a XXXX XXXX. I believe these practices are fraudulent. The letter states I have XXXX days to respond or I automatically assume responsibility. I have paid my debt, and I have good credit.