No phone lines for months

We had a lightning strike in November and reported the matter to telkom. Since then we have been to the branch twice, reported the problem online, even used their help "chat" function. All have this has done nothing to get our line restored. Today I have logged on, and I see our problem is marked as resolved, when nobody has been to sort the issue out. I don't know who else to contact and I don't know how to take this further. This service is not acceptable, and I am sick of it. Our internet is down and we have been using expensive mobile data because of the poor service from Telkom. How do I get a reaction from this company?