Tired of bad service from telkom

phone lines are dead AGAIN!!! been almost 2 weeks and no help from that useless helpline of telkom, all they want to do is reset the ports or tell you its working fine on their side, everyone with a brain knows there are 3 sides of communication, the ISP ,The Customer and the lines connecting them......and also the internet disconnects and reconnects every 5 - 10 minutes. and let me guess no one has come to replace this damaged line we been asking for for 9 months now. quick to take our money or cut of the connection when we refuse to pay but cant even fix a damaged line. if this doesn't get resolved we WILL be changing ISP's