Whose Behind must i KISS to get my service running

Whose Behind must i KISS to get my service running, i am more than angry at you guys. Last week i was having intermittent connection issues then i called and reported a fault. Got fault number 664CRK280815 and was told a technician will come check my service. A few days later i received an email to say that they tested my line and everything was working perfect of which all this was wrong. Not only was i getting issues connecting, i am now having issues with speed, i am paying for a 10Mbps Line but i am getting a speed less than 3Mbps. When i complained before i was told my area only gets Up to 6Mbps of which then i was getting just above 5Mbps and i said it was fine. Now because i am having speed issues i can't log another fault because there is already a fault that has not yet been properly fixed. So i ask Telkom, whose behind must i kiss to get this sorted because i am tired of holding on the phone trying to report a fault that no one comes to check.