3rd Report Business Line still out of order

This is now my third report on hellopeter and multiple reports to their Fault department and Telkom are not doing anything. It is now well over a month both our voice lines are out of order. They respond to the reports for all to see yet they dont follow through on anything. Can anybody please advise me what i can do about this, what legal action i can take as this is a business line and we are losing a lot of business.