Intermittent/No service on Telkom ADSL

We first reported the ADSL line being intermittent on the 2 Jan '15. A technician was supposed to come out to check the line but after a missed appointment the call was closed without fixing anything. We reported it again. (about 2 hours holding on the line to the call center.) They told us it was an issue at the exchange. Then a technician came to the house and said the line wasn't faulty but he did see that the line was dropping. He would pass it on to DTAC? to monitor the line. A few days later the call was closed without it being fixed. I logged a call again, which was closed without any repairs being done. <br> <br> Here are my last 2 call numbers 910CRK050115 303CRK080215.<br> <br> How do they close calls if the customer has not given the ok.? What do I do?? Log another call?