Longstanding and very dissapointed MTN client

My contract was due for an upgrade, but I decided not to upgrade. I called Mtn in July 2023 to ask advice about cancelling my contract. They advised me in October that I could not cancel as this would be seen as early cancellation with cancellation fees and that I should cancel after 13 November 2023. I did exactly that and now I am liable for a stupendous cancellation fee. I have received many reference numbers since my initial complaint. My voice recordings can not be found, but yet all calls are recorded. I am highly dissapointed as I am a very longstanding client of MTN and would not recommend them in future. I still have 2 contracts with MTN and will be cancelling them soon. I have never experienced this kind of bad service in my life and would appreciate if someone from senior management could get in contact with me. It is not the money which is my main concern, but the principle. This is not good TCF conduct. (Treating clients Fairly) and is definitely an upstruction of the consumer protection act. No attempt was made to evern try and assist me. Please contact me. My account number is BA*** or A***.