Please cancel my ADSL !

Should have been a 0 star! I have been trying to cancel my ADSL since May. I went to local Telkom shop twice. I have used the online cancellation service. I have phoned 10210 and 10213. I have sent emails. I have case numbers. If you look up the status, it states that it has been resolved. I have sent complaints! Instead my account went higher with R100 the past month! Instead I receive calls from call center who want to sell more products to me? How do I get in touch with someone who is able to solve my problem?