Poor Customer Service

I had a very bad experience with Cell C. I had a contact with cell c and it was settled. However, I have been requesting a paid up letter for months and according to their records I am still owing them money. The information reflecting on my credit profile is incorrect, I kept on calling Cell C and my issue is not yet resolved for months. The current active case number is *** however, every time I call their head office they are unable to assist especially with status update on my case. I regret having a Cell phone contract with Cell C.