New Line not working

We have ordered a new Telkom line for our Business. It was installed more than a month ago and has never worked !!!! Keep on calling Telkom and they only give excuses. A technician came to have a look at the line. He was here for a minute said he was going to the exchange and disappeared for hours, only to come back and say that he will return later. Customer Care line only says that they will escalate the problem. Thinking of moving to another service provider.