This website is for people to share information about these "mysterious" callers. For example, thanks to this website, I now know that this Omega group, aka SGS sales, aka ATC Inc, aka AMS list, has been calling me for over three years. It is always a person with an East Indian accent who says I've won a "free" gas card or Walmart/Target gift card. Then he wants my credit card number for "verification" (yeah right). Usually there is a tape recording playing in the background saying something about membership fees of some sort. They also used to call from area codes: 310-599-XXXX, 818-870-XXXX, 978-570-XXXX, 213-710-XXXX and now 323-429-XXXX. They use call "spoofing" technology so they can call you from multiple phone numbers. The authorites have a hard time finding them because the callers use a VoIP connection somewhere overseas, I am assuming India. If you argue with them on the phone, they will call more frequently and start saying vulgar things, especially if they are talking to a woman. The only apparent way to get them to stop bothering you is to buy a call blocker box if you have a landline, or use blocking service if you have a cellphone.