Poor service

I have cancelled my upgrade contract on the 07th of May 2021, I spoke to Faith from follow up department and she advised that the upgrade was cancelled and I need to speak to the retention department to remove it from the system. It been 4 days but nothing is happening because I told Jabu or Dineo that I dont want to renew the actual contract, so they are a delaying me coz I dnt want their service anymore, I will never recommend anyone to cell c as they are very ***********