Trying to cancel Telkom account since Sept 2018

I cancelled my LTE connection with Telkom on the 21/09/2018. This was not cancelled. I tried to contact them but with no luck. Phones just rings and trying to phone back it tells you that they experiencing high volumes. Holding on for almost a half an hour they just cut the calls. I tried the website but then it's hanging or just does not want to submit your escalation. Finally I can submit my escalation on the 05/12/2018 - received a mail that it was submitted. To date my connection is still not cancelled and they still take the money monthly from my bank account. To top the issue even more - when trying to use the data available it tells me I don't have any internet access. This is so frustrating as I'm cancelling the stuff because I can't afford it anymore but no they will just take your money