Mobile Telkom Cape Town

I have a mobile phone with Telkom, I am due for an upgrade, I have had agents phone with regards to this. I was not sure about which phone I wanted and asked them to phone me back in the next two days. This never happened. I went on line to order a phone, but there were so many question and Telkom has all the answers. So I asked for a call back. I gave them a time but they called back when they wanted. The agent asked me questions which I answered, until she came to the question of how much I earned, I told her I could not answer that question. There were people around. The agent then just said to me that she could not proceed and I must go into a store. I DO NOT WANT TO GO INTO A STORE. That was it. I can not believe the questions they ask. I am very disgusted with Telkom Cape Town