Bad service

During March 2022 I have send a request to cancel one of my contracts and received an email from them confirming cancelation. On 14 April 2022 I wanted to port my number to a new MTN contract but was informed that my number was still active. I went to Cell C store in Kolonade and was informed that they only cancel contract telephonicaly so I phoned them from that store and cancel it again. I kept on paying for that contract until October 2022 although I queried them. I went into Kolonade Cell C store and left a complained there. As from November 2022 I did not received any feedback. I phoned Jeandre (manager) and he said they keep blaming each other to take responsibility for the reffund and it is stiil under investigation. The number in query ***. I was with Cell C for the past 13 years and never experienced such bad services.