Bad administration

In September my insurance company hired a car for me through euro par car hire in Johannesburg branch. Deposit paid after 7seven days after return thy made deposit of what's due to me after all deductions done. So two months later I get a debit done on my account with no consultation with me customer. They helped themselves to my money inconvencieng me as that not bugdeted. I called their their admin no help given trsnfered to unhelpful consultant. To make matters worse a second debit is done again still no authorized or engaged me for this. I sent emails to no response.