Cell C Customer Call Centre is a Nightmare.

My problem with Cell C started in August 2021. I had a contract with them for 5 Gig daytime data and 5 Gig night-time data which expired in November 2020. During August 2021 I requested Cell C to cancel my data contract because I decided to proceed with pre-paid data. After a few days I realized that this will be quite expensive and I contacted Cell C again in order to go into a new data contract but I told the consulted specifically that I wanted to retain my old cellphone number as I had it for more than 20 years. Great was my surprise when I was informed that the new contract was approved BUT with a new number. I called Cell C immediately and informed the consultant that I asked to retain my old number. The consultant informed me in return that they could change my number but it would cost me R265. I informed the consultant that if that was the case, they should cancel the contract altogether. I even followed it up with an email. In spite of this I found out that the contract was never canceled and I am still being kept responsible for the monthly account, although I can't use the new number. Even if I can, I'm not interested. If one calls Cell C's customer service, one is reminded that all calls are recorded. Although I requested that they should listen to the recordings, they still insist that I pay the monthly account. I referred them to my emails, but according to them, it cannot be traced. Our local Cell C store was closed some time ago, and I have to go through one of the consultants at their customer service, which is really quite annoying because of their terrible service and attitudes. There is also no way one can get in touch with higher authority.