ADSL Line disconnected every 2 week

Since i had my adsl line installed from October 2014, my line had been disconnected every 2 week, then had to struggle every time to get it back online. The 8th December my line had been cut, and only on 9th January the line had been fixed, then received a bill for R956 for adsl line rental that must be paid this month for a service that has been disconnected for a month that i did not use. Now my line is off again since 27th January twee weeks later off using adsl now again offline. A technician was to fix this problem yesterday via there sms service saying that problem will be fixed in 2 working days, but yet again no service off fixing line. This is getting to be major a problem every 2 weeks to get line back up and running. Fed ip with service being disconnected. Was disconnected more then 8 times within 4 months of use of Telkom Adsl.