Website dose not work properly

I've been trying to do an upgrade online and keep getting the following message: <br> *** is due for an upgrade. To get a brand new phone delivered to your door, please ask the Master Account Holder to log in to My Vodacom and complete the upgrade online.<br> <br> I am logged in as the Master Account Holder. I tried the online chat for help on numerous occasions but it keeps giving me the following message: You are no longer connected to the internet and the chat session has been closed.<br> <br> I am currently working from home and know that I am definitely connected to the internet. Last week Friday I also tried to call the call centre for help and the service was abysmal. The agent didn't have a clue what I was talking about and was of no use.<br> <br> If this issue cannot be resolved today, 11/01/2016, I will cancel the contract and take my business else where as Vodacom is clearly making enough money not to worry about a customer who has been with them for over 9 years.