I have been receiving these calls since about February 2008. It coincidentally started when I switched from Crickett cellular to AT&T cell phone service, but then I switched to TMobile. (this all happened within about 3 weeks so I'm not certain who is to blaim.) I think one of them or one of the stores that I signed up for service sold my phone number. I do know it has something to do with this because I also have a prepaid phone that I listed when I signed up for AT&T service and it started getting calls at the same time. I honestly believe AT&T sold my info or was hacked and someone pulled my info from their system. There should be a lawsuit initiated against the warranty company.