BIS not activated

Oin the 10th of november 2015 I bought BIS for my BB bold 9900 like I would normally do every month. I received the sms notification (like I always do) which tells me to \BIS has been activated and I need to switch off my phone. I did that and to this day my BIS is still not working. I called vodacom call centre 3 times in the space of 2days. The 1st person I spoke to tried to help but to no success. The 2nd person told me vodacom was experiencing a network problem and that it was being fixed. The 3rd person told me the problem is fixed and that my BIS should be working. She advised that I switch off the phone. Wait 5mins and switch it back on. That was yesterday and still my BIS is not working. I run a very small business were my customers contact me via whatsapp. I'm concerned now that they haven't heard from me since monday and now its thursday. Some are calling and telling me they have left orders via whatsapp cause its cheaper that way. Please can you help in this regard."