No service from Telkom

My ADSL line was replaced with the new fibre line a week ago. Since then I have not had any telephone landline connection and poor internet connectivity. After several calls that went from department to department using my cell phone airtime the problem has now increased with still NO landline and now NO internet connection. Telkom clearly has no idea how to rectify this problem as each department blames the other without taking resposibility and they keep on transferring me. Another concern is that I am working from home with end year deadlines that need to be met before Christmas.