UNABLE TO CLOSE VEHICLE FINANCE ACC

I settled my vehicle finance account in full in Feb2015 after using the finance facility for approximately 2 years with NO defaults in payments (JUST WONDERING IF I WOULD HAVE BEEN TREATED DIFFERENTLY IF I DID DEFAULT AND ENDED UP IN COLLECTIONS). After speaking to several call centre consultants, they all agree that the account has been settled in full, and reflecting a NIL balance. BUT since settlement in Feb2015, It has been impossible to close the account in order for the NATIS document to be released and delivered to me.<br> <br> I am not prepared to contact the call centre further as the response is very simple : \ I will log a call to have the account closed