Telkom

I got my new phone on Wednesday morning. I put the new sim card in. I had it off for most of the 48 Hours. Its still not working. Its still not registered!! I need my phone to work like in now!!!!! If you phone the *** from a landline nothing happens!! How do you get hold of Telkom so that they can fix the problem. I cant use my cell phone so have to phone from a landline!! I need my phone to work asap!!!!!!!!!!!!!!!!!!!!!!!!!!!