Useless Service by Vodacom

Useless service. I am a client of Vodacom since the inception of cellphones in the early 90’s. In July I requested a relocation of a Wi Fi service. I was provided 3 times with a new quote for a Wi Fi service, after each quote I phoned and said to the operator that it is a relocation of an existing service. On acceptance of the quote a new debit will be created as it is seen as a new service. After discussing it 3 times I cancelled the service and went to another service provider. My bank account is still debited for a service I don’t have. I have returned the debit order end of September and requested 3 times a detailed invoice, now I am threatened that my cellphone contract will be suspended.