Useless Service

Good day everyone, hope someone may be of assistance here. We app**** for a telkom adsl line early March, application processes online and we received our router and extender a few weeks later together with a zero balance invoice and statement with our account number. Since then going onto 4 months after continuing to contact them regarding the line installation, we have been shoved from pillar to post with no satisfaction, been told it's with the technical dept which is outsourced to Open serve, we have requested this to be flagged to a Manager or someone that can give us an answer, ANY ANSWER, they have given us escalation numbers, 3 TIMES and we are told a manager will contact us. We still waiting after 3 months for a call. They are so fortunate that they are the only land line Service provider in S A, I believe they would loose an enormous amount of clients ! Anyone gave a contact number or name we can contact ? #telkom