Telkom...worst service provider

We have a router at home and a contract with Telkom for donkey years. Our subscription is R900 a month. We have been complaining since last year about the poor quality in our area. Basically our internet works barely half the month. We use it mainly in the afternoon as we all are working and more so for business purposes. We have such a battle as this internet doesn't work and it's a huge loss especially for our business. Telkom is not interested in assisting irrespective how many times we report it.