Bad service

I am fedup with Capitec, last month they freezed my acc without informing me then I sorted that out. On the 23rd of October I hired a car with Avis an amount of R6940 left my acc with a reference Avis Pre authorisation and yesterday the same amount was deducted again saiying Avis rent a car. Then I made a deposit of R470 and my bank balance after that deposit said R0.00 I called the bank and the lady said I used the money that was deducted on the 23rd of which it was a lie and I asked her that I go through my app statement while we on the phone and she later said there's a pending amount of R6940 and I should be refunded. I am still waiting. This is affecting my work as the money I deposited was supposed to be for my petrol to work this morning. I have been with Capitec for the past 12 years and to be honest lately I am very disappointed. I am self employed and my money is paid into my Capitec ACC but they say they don't give loan's of finance to self employed clients. I think it's time I say bye bye capitec