Poor Customer Service

I am really not happy with the service I am currently getting from Edgars/Unite Rewards, I had signed up for a data package in October and on the 16th November 2018 I called in and cancelled I spoke to a lady by the name of Susan (Ref Y151450) and told me it is cancelled only to find that it wasn't because I was stilled bailed for it. I then called again and spoke to Sfiso Nkosi on the 12 December 2018 and he told me it was never cancelled but he will do it for me and he "did" (Ref Data - ********** 876682 SMS - ********** 86688) and he told me it will take 6-8 days for this issue to be resolved and still come January statement I'm billed for the services. I called again on the 28th January and spoke to Mashudu around 09:36am and logged the same complaint and she told me she will escalate the matter and there will be a consultant that will call me within 48 hours and till today no has called me and this is really irritating because I cant be calling about this every month for it to be cancelled and keep being told its done when its not. On Monday 28th January I then receive a "Welcome" message from United Rewards instead of a cancellation, like I don't understand what is going on.