Tempest Car Hire

I rented a vehicle from Tempest Car Hire on 2 March 2021. A deposit (hold) of R11509.30 was put on my Private Client Credit Card. The car was returned on 7 March 2021 without any damage. With the return of the vehicle an inspection was done and there was no damage and mentioning of any damage. According to me the total rental were to be in the order of R6500 for the period. Usually the balance of the deposit is refunded into my account within a view days after the rental is returned. I realised last week that no refund was done. On enquiring what the status of my refund is a second amount of R4432,90 was suddenly deducted from my account on 25 March, a further amount of R300 was deducted on 28 March. I was not informed of any claim or damaged until I had to ask when I will receive my refund on the deposit. I lodged a formal complain with Tempest Hire head office. On enquiry with Tempest Hatfield I was just informed a dust cover had to be replaced, no more information could be given. The person just inform me to lodge a complain with the claims department. No explanation could be give for why the amounts are deducted. Was there not suppose to be communication in this regard. What guarantee do I have that "this" dust cover was even there when I rented the vehicle? Totally unfair and unprofessional service, will never in my live make use of Tempest again.