Our line still doesnt work correct

Hi<br> <br> I logged a fault for our lines. Most have been restored except one. Which rings and rings but when you pick up its dead but when you place phone down it starts ringing again. If you call nr it seems we are not picking up as it just rings. So bad for business. We have 4 nrs at our junction. I did receive a sms that service has been restored but no one from telkom even contacted us to ask what is wrong. How can they fix problem if they dont know what is wrong.<br> <br> STB