Telkom Billing -Lack of service

I have cancelled my Telkom account in June 2018, a month in advanced. This was done in a Telkom shop and they assisted me to cancell it online. Thereafter i was bolled again and i cancelled it again in the shop and we called the billing department. Again they ignored my cancellation and i cancelled it again online. To date they just keep billing me regardless of all my proof and references. I am frustrated with Telkom and it seems they just lack accountability and without taking ownership. Worst service provider in SA.