Telkom service is ridiculous

I have been with Telkom for the past 9 years and I must say that everytime I have a dispute or a queries it takes ages before it's resolved but when it comes to sales they are the fastest. I was called by a sales agent to offer me fiber as I was on LTE. This is last year December. I asked the agent numerous times if I change to fiber will I be charged cancelation fee. He said no. Fine I went ahead with the upgrade and it was installed the 10th of Jan. I called the following day for my LTE to be cancelled which it wasn't. I called the beginning of February and it was still not cancelled. I called again on the16th of Feb and only then was it cancelled. I was thereafter billed for the LTE which I again disputed but no one could help me. I refused to pay this as I requested for cancelation in January already. Now my services are suspended due to this payment although I did a part payment for the rest of the stuff. On top of that telkom is charging me R560 for the device that came with the LTE even though I was told in December that I won't be charged. I've called in numerous times to get this resolved and nothing happens. I am so unhappy and can't wait for my contracts to be over so I don't have to deal with Telkom again