The worst customer service

I have been a Vodacom customer for years now and the service has gone from bad to worse. for months I have been in contact with collections department and every time i am told the issue of my debit order has been sorted. the last promise was made in June however et again it has not been sorted on Monday the 4th I spoke to Zanele Khumalo who refused to put me through to her team leader and said my account will be updated and will receive a call back on the 5th I was told team leaders are in a meeting and again I will receive a call back today is the 6th my account has not been updated yet payment was made on Monday yet again I am told I will receive a call back and my account will be updated. At this point I'm highly motivated to cancel this contract