TELKOMS SHOCKING SERVICE

I would like assistance with cancelling a telkom account.. Every month i get a new account for an account that i cancelled in January 2018. Every month I call and complain and send via email the cancellation form. I have been into the Telkom store in The Glenn Shopping Mall and The Mall of the South. Every time they promise to escalate the query and get it cancelled. It is now December and I have had a application declined due to this not been sorted out. This is driving me insane and cannot go on. Who do I contact to sort this out. The service is shocking.