*****ing out BUNDLE

I've noticed recently that something is going on in my phone, i bought 1G data bundles last week Monday and it lasted for few days. Then I decided to switch everything of and again Friday 15th May, i bought another 1G, to my surprise i received an sms stating \ You have 4.07MB remaining of your data bundle". I was WHAT THE HELL was that?. tried to call and was was not even assisted. What the hell is going on with these service providers? Everyone want to ***** something from us. This thing happened last year August and i complained and it was sorted"