KNOXVILLE, Tenn. (WVLT) -- The Better Business Bureau is warning consumers about the "One Ring" scam.
Here's how it works: a computer will call your cell phone, but it'll only ring once.
When you go to return the call, you may be charged a $19.95 international fee.
The BBB says the scammers are making thousands of calls to random phone numbers.
If you miss a call, experts recommend you ignore it and don't call back if you don't recognize the phone number.
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