Vodacom - cancellations nightmare

I have had an nightmare experience trying to cancel a data contract. Story in short, I phone vodacom cancellations department on 1st of June 2019 to cancel my vodacom data contract. Customer care agent told me all done --- contract has been cancelled...great!! Only not so great, 28th June, direct debit goes off my acount again. I phoned cancelation department today (1st July) and I am informed contract was not cancelled, but suspended, and I first need to contact customer care to remove the cancellation before I can cancel contract.....ok....great....Vodacom's error, but I comply, phone customer care, they tell me adminstration lock has been placed on the number, fist need to speak to Subscription collections and then they can remove suspension and then cancellation can proceed......so getting rather annoyed phone subscriptions....and automated service tells me account all paid up....and they put me through to customer service..... All this is happening whilst I am phoning from outside South Africa on a very expensive roaming cost to try to sort out what im my honest opinion has been Vodacom's ****up. My question dear Vodacom is who can I speak to that can resolve this issue without being passed from one department to the next and spending 30 mins per call on the line. Need a single point of contact with accountability to resolve this matter!!!!