Terrible Customer Experience from Avis Centurion branch

After numerous attempts to resolve a dispute (***2ZA1) with the Avis Centurion branch manager, I will not recommend using this branch purely based on exceptionally bad customer service. I had to return the car on 23 March 2024 which is a Sunday. When the car was delivered to me, the agent indicated that i can deliver it WITHOUT penalty the next morning first thing. That is what i did and subsequently billed for the extra day which is the dispute. Also, i had to make several calls to request my refund to be paid back to me, only to be notified that the bank details form was never received, which I did hand over to the branch manager the same time when returning the car. Absolute shocking service from this Avis branch manager.