UNAUTHORIZED DEBIT ORDER

Good day Kindly assist Iwyze has been debiting my account only gave them permission to debit on the 29 but on their side they go and debit at any given time, at the moment i am owing the bank and iwyze has terminated their services. Called on the 29November and advised the lady i was talking to, to debit my account on the 7th but that was not done and i am sitting with debts but at the same time my car is not insured. if this is not being attended to i will take it further to the law society cause i feel i was not assistant accordingly after i have made several attempts to get assistance.