Unauthorised debits to cheque account stopped by Discovery Bank; FNB response on the same problem- Unable to process your request.

Good day On 31 March I advised FNB debit card disputes and FNB care of the following:- 4 Unauthorized transactions have been debited from my FNB cheque account using a debit card I blocked and discarded in February. The unauthorized transactions took place on the 27th March for R335 and R334.99 AND 30 March 2020 for R335.00 and R334.99. Since then more have occurred. These are from AVIS. I requested the urgent reversal of these unauthorized debits. FNB ***** advised the could not assist when I called them on the 27th March, hence the referral to FNB Care and FNB debit card disputes. On 8 April 2020, I received an SMS from FNB that they were"Unable" to resolve the dispute I had to resubmit. The same unauthorized transactions occurred on my discovery card. On 4 April 2020 I contact Discovery Bank to request that they block the unauthorized transactions - one phone call later they stopped unauthorized debits. They also advised that I was the 3rd client to call in about this knows the issue with AVIS. FNB, your service in this regard is more than disappointing. Please reverse the unauthorized transactions