Bad service and too many deductions

I have been having an account with cartrack for 2 years now. In January 2018 they deducted my account twice,spoke to their accounts department they said its a mistake on their side and i must reverse the money back to my bank account,i did that ,come february they did the very same thing deduct twice then i reversed the amount again with bank charges included to be paid by me,and now i spoke to the consaltant Ivin Baloyi who said he will help me. Recently received a call from him and he said he will help as he also see that i was not charged correctly, now car tracker is saying i owe them R440.83 which i dont know anything about it. And after the february issue i decided to cancell my service with them but atull it hasnt been cancelled. Im very much disappointed by this service i received