Reported a fault but no response

My phone went off 3 weeks ago, I have reported this every second day. I've been into a store every week and waited for two hours but nobody cares to help. I've already told Telkom two months ago that im moving into new premises but my phone isn't even fixed. Now im moving in 3 days and don't know what to do any more. its a business phone and Im losing business but they still expect us to pay for a line that's not working. I don't know who to phone or what to do.