Big corporates and bad customer service

I bought 3 toyota quantum from S.A taxi and i was told they'll come with a cartrack device and their insurance, one vehicle was in a accident written off, second was ****** and never recovered, third vehicle i managed to settle it and ask the S. A TAXI consultant upon collecting my enatis documents that i am not intrested in any of their services from them like the tracking device and insurance but cartrack keeps debiting, i ended up disputing those debit orders now i am handed over to lawyers and threatened to be blacklisted and i never signed a contract with cartrack