Being billed for a service that has never worked.

App**** for an ordinary home connection. A line was installed in 2weeks. It turned out to be another existing subscriber's line. She reported a fault and they restored her service the next day. We reported our problem and was given a ref. No. Nothing for two weeks. Couldn't report it again, because their was already a fault report. Sent a email via their 'Contact Us' link on their website. 2 white guys from Telkom arrive 2 days later and fixed the line. An hour later, 2 black guys, (Contractors) arrive saying that the line was dead. I listened and it was dead again. They connected their tone and came back. The line was working again. I asked if the 'Strip & Line details had been correctly correlated with their Networks. \Yes". Within 3 days"