Adsl down again

Listen up Telkom, we have had intermittent adsl for 3 weeks now, telephonic and technician service has not yielded any improvement. We cannot reset the router as it does not help. We are paying for something which does not work and are now running on GSM again. If I cancel you I know you will call me everyday to find out why. You only react after the event, just come and sort it out before I cancel your service