My firm ceased operations on XX/XX/XXXX and we closed our Chase card on XX/XX/XXXX by letter. This card was paid off on XXXX XXXX In XXXX of XXXX we received correspondence from a debt collection company demanding payment of {$480.00} for charges made on our Chase card account. Prior to this letter I had received no statements from Chase since XX/XX/XXXX. We had closed our Post Office Box on XX/XX/XXXX and filed a change of address with the USPS. 

I contacted Chase and received copies of any statements after XX/XX/XXXX. On the statements I discovered that on XX/XX/XXXX a charge of {$450.00} was made to XXXX XXXX XXXX. This is the service we used for our accounting prior to ceasing operations. Additionally, there were late fees and interest charges of {$240.00} between XX/XX/XXXX and XX/XX/XXXX. In addition I found a credit from XXXX in the amount of {$260.00} on XX/XX/XXXX. 

I contacted Chase again and explained to them that 1 ) Our account should have been closed per our letter of XXXX XXXX and 2 ) We did not authorize XXXX to make their charge, in fact we had no use for their services due our ceasing of operations. 

Apparently Chase claims never to have received our letter closing our account and that they would look into it and make a determination. 

Yesterday, I received a letter dated XX/XX/XXXX from chase informing me that the balance they show is correct and that I should make a prompt payment