T-Mobile subscribers, how are we going to stop AT&T from ruining our great service provider?

I am adamantly opposed to AT&T buying T-Mobile. It's going to mean higher prices for T-Mobile users and a loss of jobs, most likely on the T-Mobile side. Also, it will reduce the number of cell phone companies to 3. Soon after, Verizon will gobble up Sprint since they are both CDMA and then we'll all be left with only two choices AGAIN. What can we do to stop AT&T? Writing those punk *** crooks in DC isn't going to do much, so what else can be do?