ADSL line not working

TELKOM installed our ADSL on 8/7/15, it has not worked properly since day 1 and we have had NO ADSL since the first week in August. Have called tech support, reported by e-mail, reported on FB page. Have been promised that our case has been escalated. They have still charged us for the service and in fact overcharged us on EVERY account so far. They have already tried to charge me once for a call out fee to fix THEIR line problem and I have now been threatened with a call out fee again to fix THEIR line problem. They have not rep**** to e-mails and I am at my wits end. I am only contactable via e-mail at [Email Removed]