Poor service

I bought a cellphome on a 2 year contract with Telkom, the contract was set to end in September 2023. I couldn't cancel the contract due to illness, therefore Telkom continued to deduct the installment in October to December, since l was not able visit the store to cancel the contract l tried calling Telkom and l will be directed to the website to do my cancelation. When l did that it will end by giving me a notification that an agent will call. I have a true caller ID app in my phone, Telkom will call and l answer the phone, no response. I ho back again to the website and start the process and system will give me same information. I got a call from one of the Telkom sales person and they always address me as Rebecca Ndlovu, they will tell me when they open the system that's what they are seeing and when they check the profile they see Wendy, and they never did anything about it but promised they will correct, and they will say they don't work with cancelation they will ask a consultant to call me, and nothing will happen. Until l decided to reverse the deduction in 25 January 2024. The next message l got was on the following day that l have been handed over yo NuDebt because l had defaulted. I started receiving multiple messages from NuDebt and they finally called. I told them my story and they said unfortunately you have been handed over and you need to pay. Telkom finally called me and they canceled my contract over the phone beginning of February, and insisted l have to pay the money l reversed of which they were to deduct in my next pay day. Which is 25 February. NuDebt has been sending the following message and l want to know, how can these people list me when I stopped this payment for one installment and because l wanted them to contact me because l couldn't and l was going to continue paying this as long as l was not fit enough to visit the shop.