What has uti**** my airtime?

I would like to know, based on the current package that I om, with more than sufficient data and minutes (and I purchased an sms bundle this month, and still have 6 available), what has utilised my airtime over the weekend? I am not subscribed to any WASP services either.

I am aware that it only '90c' that I am querying, but the amount is not the issue. I simply would like to know what consumed this amount, especially in light of recent media articles reflecting airtime missing, etc.