Cry for help

I've been a customer for almost 15years and I have faced 2 ********** upgrades that were made on my account and 1 wrong upgrade subscription...As if that was not enough, this is the worst..I went to the Westgate MTN store when I was due for an upgrade but because I saw nothing that interest me..I asked if I can remain on the same contract without upgrading till I see what I would want and they assured me that it will go on a month to month and that I will end up paying less..that was in October 2020..so I was unable to make payment on for the next month due to unforeseen conditions and they suspended my line which was fair but can u believe that when I went in December to make payments for November that I missed and December and January because I normally pay 1 or 2 months ahead..I discovered that I now owe R1300 from R200 subscription to R750 subscription and when i asked them why?they couldn't give me an explanation they logged about 3queries to find out why but in the end someone advised me to to call the call center..so I did..they would answer and say they we are transferring you to the right department and would just hang up..I called about 5days before I could get help and I was told that the contract I took was discounted and has now gone back to the original price and I told them that I had no idea and was not informed of this when I took it and that the amount is too huge for me and can't afford it and I requested that they cancel the account but I was told that can never happen their legal team will ensure that I pay first but I also asked why am I continuously being billed for something I dont receive or use and yet they refuse to cancel it..the consultant told me to return to the store and so I did and there also gave no solution and said only their manager can help who was only going to be on duty after I'm billed again which is now R2100 that's heading to R3000 because they said they will continue to suspend my line and continue to bill me..so please somebody please help me..I dont have lawyers or money to get one to fight this case for me.