Fabricating data usage

I am so disappointed with Afrihost. We used to be really happy with them, no issues at all for the first 6 months of our contract with them. But then they told us that they were changing their service provider from Cell C to Telkom. Our package was originally 50G a month with Cell C (which was more than enough for us - we never came close to running out) they didn't give us an option and we were forced to change to Telkom which offered 40G anytime and 40G night time. This nighttime bundle is **************** first of all, we will never ever use 40G of nighttime data. But never the less, we were OK with swapping over at first, we trusted their call.

But, two months in and we are racing through data at a ridiculous rate, and the only thing that has changed is our service provider of. On days like today, we didn't use any internet at all, and it says we used 500megs in one day! Last night, we checked our usage at midnight, and 5 minutes later, it said we had used 150 megs of our anytime data!! None of the anytime data should be used at that time!!

I really feel I am being **********. How do I challenge this when I have no "itemized billing" for want of a better term? I am convinced they are saying I'm using more (much more) than I am in reality.