No assistance or comunication and unfair treatment

I have a vehicle finance account with ABSA since 2012. I had been paying each and every month, just to find out a few months ago that they had been deducting too much money from me. They then refunded me.This week I wanted to apply for a credit card just to find out ABSA had listed my name with the Credit Bureau for being in arrears with my car payment for 3 months! (Which is not true as I have the proof I paid). I filed a complaint on Monday, gotten no assistance. Yesterday i went physically to Sandon City ABSA, and contacted vehicle finance, just to find out i owe them R25,28 for which they had listed me at the Credit Bureau! To date they had not sent me even one email to tell me that I owe them. I then immediately paid the money, and phoned Collections to remove my name from the Credit Bureau to which they rep**** \they cant". They gave me the number of a woman in ABSA Credit Bureau"