So, I have Google voice almost solely to not pay for sms to/from non vzw customers. When I receive sms, I get my GV notification then I get a text to my cell from a random 406 area code number. My cell is 406, my gv is 509. How do I stop that? I have gone through the settings and I can't find it. Also, does that charge me for a non vzw text? The last two months, pre GV, I have had bout 1,000 non vzw txts, ouch!