The worst treatment ever

Hi I have been having endless issues with cartrack accounts department they have been debited twice a month I have reversed one debit the very next month they did not debit my account they then give me a call saying im in arrears I then tell them to debit my account I contacted them the next day they tell me the debit went tru I o them nothing a few days later I get a call back saying I o them again I then done a transfer I'd like to no who is incharge of account department at cartrack as it is becoming a issue month in month out I need a way forward as to the consultant busisiwe at cartrack is un helpful and useless I need someone higher to please sort my issue out as busisiwe say if I am in arrears and something does happen to my car cartrack will not react as I feel itz not my fault as the funds are there by them not debiting my account does not become my issue