237762 minutes talk in one year

in the past year, thru my system were used 237762 minutes and 53871 calls.
If every minutes would be charged with 0.01 $, I would have now 2377,62 $, so actually the server is paying for itself in the data center, and more than that, the "reinvite" function, save me from using more bandwith than I am allowed.
Most of the calls were from cell phones, so I guess the cell phone companies should give me some procent of their shares.... dream on...