I saw an ad(on eros) for a visiting provider from another city with her area's phone number on it.  Research her using that number and she seams highly praised.  Went back to the ad 2 days later, however, and the phone number has changed to one in my area.  Research this number and no ifo was available on it.  Can anyone explain.

it costs 12 bucks to change your number
if you are touring, it is cheaper that having roaming minutes on a cell phone

don't worry and have a good time
practice safety by verifying that it is the same girl but that should be it