Unauthorized debit

My car was taken in for repairs and I was allocated a car for car hire. Throughout the car hire period I was constantly stressed because I was told that I have to return the car because it is due meanwhile they still have my car for repairs. The question you ask yourself is does one really need car hire as an additional cover on the insurance. I have no business with bidvest, my business is with budget, budget have authorized bidvest to deducted money from my a account without communicating with me and without my consent whatsoever meanwhile they have not even returned my deposit. I have had enough of budget insurance because this is not the first time being in this situation. If this matter is not sorted out I'm canceling my insurance with them.