Disappointing Service

I cancelled my contract in July 2019 and October I was told there was an outstanding amount which I have payed,When I check in January 2020 on ITC Cellc still appear negative.I called the legal department to send me paid up letter and Make sure the account is updated on ITC. Which They confirmed its done. But When I checked yesterday it still reflect negative. I called the cellc yesterday the consultant said she is sending an email for my profile to be updated, this was shocking to me as the letter sent to me state that the profile has been updated will all the credit bureau.I asked to speak to a supervisor to explain to me what actually happened.Finah said Malcom or Kamal will give me a call as they were not available. Few minutes later Finah called saying she is putting me to a supervisor even today i'm still waiting. I never Thought Cell C will treat me like this after being with them for more than 10 years.