BILLED AN INCORRECT ACCOUNT

I did an online booking successfully with Avis on the 26/11/2015 with my cheque account card only to find out that my cheque card is not user friendly for Avis since it has no Intials and surname on it. I was told by Avis that this not a problem and I can just use my credit card when i get to the branch in Grahamstown. Which i did and was advised that the online booking is cancelled. Returned the car with a dent and was charged R10,5k for the damages. Went to a branch in Loveday street, made an arrangement to pay and started making payments with my credit card. I paid R5k, R4k and lastly R1k. on the 17/01/2016 Avis debited my cheque account with R9000. I disputed this as my arrangement with them is over my credit card. Upon investigation i found out that the debt paymnets i made at the branch were only holds/reserves and my credit card was not debit as instructed. I am now asking Avis to reverse this debit from my cheque account as it caused strain in my finances and pass it over my credit card. Then I can again make an arrangement to pay off the debt. After sending me from pillar to post they are refusing. My bond for my house and my kids school fees are still unpaid debit orders.