Telkom black listing people for nothing

Hi hello Peter, my name is Nicholas. I took out an lte WiFi contact with telkom around March 2020,from the day I received the router I was unable to use it. I called telkom so many times and they could never get it right so I told them to rather cancel it, they said in order to cancel they would have to send a technician out and if the technician does a report and the problem isn't from my side they would cancel and I wouldn't have to pay anything because I was unable to use it, the technician came out and did his report, told me that my area doesn't have any coverage of 4g so it's not my problem they will cancel it, months went by No1 contacted me until sometime in September If am not mistaken asking me to pay or they will black list me after fighting and explaining myself situation some lady calls me and tells me now they need a another technician to came out, me fighting asking why when they did already send someone out, so eventually I just said it's fine send someone if that's gonna help just get it over and cancelled, up till now No1 has called or came to me, Iv been black listed where now I want to take out a bound and I can't. Telkom is the worst people they don't k ow how to do business, how many orther people are they robbing and making their names bad over prolems that are from there side. Please help me to get my message out there to the right people this is so unfair, telkom and their staff must be dealt with