Cancelation of contract without communication

I've been renting a car with RAD since February 15 2022. They services the car once, so early this year I asked them to service the car and was told that it's not time yet as I haven't reached the kilos yet. I told Deven the car shakes when I rive and he told me not yet. So eventually inFen this year I booked in the car as it time for the service.

Deven comes an inspects the car, and tell me the service might take log. I asked him why because the last time it was done within an hour and drove back to work with the car. He let me sit there for almost a hour and come back to tell me that the car will be done the next day and I might need to pay some money. Which shocked me because the service is on them as it's their car and I do have a service plan. I went home and he text me the next day that the car is ready but I'll need to pay R10300.

I told him I do not have and he said on 2weeks time if I don't pay the R10 300 they will cancel my contract. Okay as I'm sitting and trying to get the R10300 together after 6days I receive a text from my bank that the Debi check from RAD is canceled. To my surprise its not two weeks yet, I text Deven and he tell me I won't be able to pay as they had to fix the bonnet also which amounted to R8100.

Even we discussed and agreed that bonnet be done in April when I get my bonus. They went along and did it. Now they took their car I signed nothing and it wasn't communicated with me. When I called office to refund my deposit as I haven't canceled the contract they did, they tell me I owe them. I feel exploited, taken advantage of and ****med because nothing was communicated with me. I'm very disappointed in RAD.