Cell C a.k.a Cell Cheat is out to ruin my life

Cell C had been deducting R1300 from my account instead of R800 from my account since 2019 March for almost 2 years. I called cell C, no firstly I contacted the ****mer that sold the fibre to me (Ashley Pillay, based in Durban) and he told me there was nothing he can do, I was not surprised anyway because he had already collected his comission from cell C, so at that point I was nothing but just a statistic to him (I have WhatsApp messages as proof). I then called, emailed cell C and even wrote my dilemma on hello peter of which I ended up getting responses (emails and phone calls) that the service will be terminated and the amount they have been taking from me will be used as a store credit. I was excited to hear this but the month ended and the same amount was deducted and this happened for like 4 more months or so, after I was promised that the issue will be fixed. I got frustrated and realized I did not want to be cell c’s victim anymore. So every time they deduct the R1300, I would reverse it… I did this for 5 months I think until they became frustrated and terminated my contract and I gladly went to sign up with Mweb and they have been awesome! This seemed like my only option to be honest because otherwise Cell C would still be billing me R400 extra than what they are supposed to bill me even today. Anywho… few months down the line, some annoying debt collectors started calling me and telling me that I am owing cell C seven thousand rands and some change. I kept telling them I don’t owe Cell C ****, instead Cell C owes me for ripping me off for 2 whole years but unfortunately these were not intelligent people so they kept calling and telling me the same story and you could see that my response is not recorded anywhere in their database. Almost every day I am harassed by the same people and none of them gets what I am saying. I am really frustrated at the moment because cell C is out to ruin my credit record when they are the ones who were being inefficient and unprofessional. Can they sort this out before it gets out of control because I really can’t pay for something I cancelled 2 years prior and was still billed for. The fibre is not a fixed term contract so I am supposed to be able to change the service anytime I like but cell C’s billing staff was not well trained to fix this and stop the unnecessary billing from happening. This is the ticket number: Ticket # [CF094270] , have had it since 2019. I have emails as proof where I was promised heaven and earth regarding the cancellation of the extra service I had cancelled.