Suspension of ADSL line

Since the installation of my ADSL line in May 2015, my ADSL line is being suspended every month by Telkom. My ISP logs faults on my behalf and usually about 5 days later I receive an SMS stating that the fault has been rectified, with that not being the case. I then call Telkom directly to find out the cause of my line being suspended and I get transferred between departments with no one being able to help me. My account is always paid up in time but the service I receive is unacceptable. I pay about R200 for line rental to Telkom but for about a full week every month my line is suspended and only rectified after I had spent more than R300 worth of airtime and have demanded to speak to the consultants' supervisors. It is really frustrating having to pay for a service that I cannot even use half the time.