If you get a call from a four digit number on your mobile phone, don't answer it and don't call it back. It's a scam.
The Better Business Bureau says hundreds of people in KELOLAND are getting calls from four digit numbers that show up on the caller ID on their phone.
If they answer, they are told their credit card is being cancelled. If they call the number back, the Better Business Bureau believes they will face a $15 charge on their cell phone bill.