FAILURE TO REPAIR FAULT

We have been stuggling with intermittent ADSL and fax facilities. It was reported a month ago. The tecnician alleged the fault was with ou router. I replaced ou router but the problem persisted. My IT person investigated the issue and found nothing wrong with our router. When we ping 8.8.8.8 we can see how the connection is interrupted. I reported the issue to Telkom agsin on 19.11.15. A week later the isdue had not been resolved. I phoned Telkom 2 days ago the agent said she could see rhe tecnician worked on the fault on 23.11.15 she then phoned him. He told her a card needs to be replaced at the exchage an he is waiting for his supervisor to let him know when he can collect it. He promised results by the end of the day. Yesterday we phoned Telkim again. This time the tecnician said he was reassigned to a new installation. The agent phoned the supervisor who said he will have a tecnician on the issue before close of business. Today the problem had still not been resolved an our business is incurring damages. Who will take responsibility for Telkom's failure to honour their service contract with us. Our acc is always paid in full.