Extremely Poor Service

2018 i bought a Telkom Rooter Online and it was delivered but was not working. I reported this matter to Telkom and was in communication with their consultant Bianca but the matter was not resolved. Cancellation online was done but the contract was still open and i was still receiving invoices and the company was still deduction mind you i was not even using the Rooter. Along the way there were changes to consultants but since i was not getting help i would also call their online service number i spoke to different sales consultants who also did not help me. Fast forward cancellation letter was sent, cancellation form was completed and submitted as per their request but still no cancellation was done till today the matter is not resolved. Every year i receive calls from Debt companies regarding this account this poor service of theirs is really damaging my credit. I have been to 3 different branches and i was told the online team is the one responsible to correct the matter there is nothing much they can do at the branches, Is this not the same company? To make matters worse one consultant advise that in my area there is no Telkom network i should not have been given that rooter in the first place IMAGINE! im suffering for something that shouldn't have been approved in the first place. How many cancellation do i have to make for my account to be cancelled? What do i have to do to have this cancelled tell me now i do not anymore. After this matter is resolved someone really need to pay for the damage caused by this