Telkom are ********* not cancelling line after 3 attempts over 6 months

We have cancelled our internet 3 times already but we still receive bills. I have all the information of everyone I spoke to and the dates of when these conversations happened. The line was cancelled November of 2017 the first time. This has become ridiculous. There is no excuse for this happening after trying to cancel 3 times. It is practically ********. First person I spoke to in store was Makhosorona Moyo on 28/11/2017. The second was Yinolia who I called 23/04/2018. She contacted a person in Telkom called Nangomso Siqunga from the cancellation department. And still NOTHING!