Cell phone users who decided to return the call could end up with unwanted charges on their next bill.
The organization says calls usually come from foreign countries, like Antigua and Barbuda, with area codes like 268, 809, 876, 284 and 473.
People who call back are connected to an "adult entertainment service" that charges an international fee of $19.95 and at least $9 per minute spent on the call.
Don't answer or return these calls. It is a scam that supposedly will charge to you cell phone bill. pic.twitter.com/jXuz4Hmw9m— Jeremy Morris (@jmorris2908) February 4, 2014