BIS problems

Good day, I'm utterly disappointed with the vodacom services. I have a top up contract and I've been paying for BIS but for the past 2 months my BIS stopped workingby the 15th. I phoned the call centre numerous times and they told me there's nothing wrong on their side but my phone says I'm not connected to Blackberry internet service. I went to the chatsworth store and they told me vodacom is having a BIS problem. So this means I am paying for BIS that I cannot use??? That's ridiculous and I want a refund as I cannot be paying for services that I'm not using. This matter needs to be resolved as soon as possible.