No Answer

I have been trying for 3 days to get through to Telkom, on 10210 I have just had the line installed and already feel so frustrated. There seem to be a problem with the billing side but I can get hold of anyone to sort it out. Each time I try and call at various times and hold for 20 minutes or longer at a time with no answer just an automated voice saying they experiencing high call volumes. This is insane. I have also emailed with no answer. Very frustrating. I can't leave work to go to the office so I don't know how to sort this out.