Multiple incorrect card info submission for claim!

I returned a car to AVIS on the due date 12 March 2015, on 13 March I kept receiving smses from my bank stating an incorrect expiry date was entered while submitting a debit from Avis. I contacted the Avis branch and Lee referred me to the head office stating they don't deal with claims and I need to contact the head office. I contacted the head office and Caroline is now referring me back to the Centurion branch because they say they don't deal with claims until 48hrs of returning the car therefore this could be a potential ***** case on my card but no one is answering the phone at 15:30. <br> <br> Who exactly is in charge of submitting claims to banks???