Accounts Department - get your act together

Hired a Avis car on Wednesday only to be told that I still owed Avis R8000.00. This is despite the fact that I went out of my way to prove that I had indeed made payment and received a appology letter from Avis with the promise that the payment was allocated.

All attemps at reaching Ayanda (Supervisor Durban) was met with failure, all e-mails to him has gone unanswered (4 and counting) and all calls to the Head office from the Avis branch was met with a request that we contact Ayanda to find out why the payment does not reflect.

I not only paid the money but went out of my way to provide proof of payment to Ayanda and head office this despite using Avis's only payment portal.

Where do I go now - I would like to hire cars from Avis again but right now I am blocked - pure incompetece