Vodacom Fibre dissatisfaction

I've been so disappointed with Vodacom, i get debit orders for a service i cancelled. A month after cancellation was understandable but the second month after that i got double debited. Everytime i call i have to explain the situation like it is not logged in a system. Vodacom really has horrible customer service. A month later my service request still says awaiting credit approval and not disclosing whether i will get all three debit order refunds amount or not.