dolsen:sbiddle: That sort of usage is well in excess of normal and would be flagged as probable CTU use which is prohibited.
What's CTU use?
Cellular trunking unit. Lots of people hook them up to their PBX's to make outbound calls to mobiles and find they get pinged by the mobile networks for doing this because it breaches the terms and conditions for all 3 networks.
It's also incredibly easy to identify CTU use based on the IMSI.
I assume the OP is infact using a phone and not a CTU?