Without service for 3 weeks: nowhere to escalate

Line failed 18 Jan. When reported was told it is ISP failure and to be patient. Again reported 22 Jan, escalated on 28 Jan, still out. Tried to get hold of call centre on 04 Jan (three attempts of approx 1 hour each) no luck. Again tried to get through on 05 Jan 2015. Call was cut by Telkom after holding on 52 minutes. Cannot find any number of anyone senior in Telkom to escalate problem ... almost as if Telkom does not want to be confronted by problems . Tried e-mails. sms (30591) and call centre (10210). NO RESPONSE and FAULTY LINE continues. How do I get through to someone that can help??