this person claims to be FBI and is trying to extort money.

Ya he is a clown trying to exstort money from people, he's got some serious problems

The authorities have been notified and are doing an investigation on the # 720 236 3768, on felony charges of impersinating, law enforcement...

This isnt a scam my son was aeeested  yesterday..so whatever it is he got sexual charges niw and his cell got takin for evidence...i got number from his cell records..baik
l as of now is 25000  .ceazy as hell to me but guesse they do as they please

Nice try shill or are you just another sad little troll?  "...he got sexual charges", what a dweeb!  Scaring people into calling your sad little extortion company won't work.  In fact, what you are doing is illegal.  Hopefully YOU will be arrested soon and maybe they can tack on some sexual charges for YOU.  To the folks being called by these bozos, take heart.  The FBI isn't calling you, nor are any other police or government agencies.  These are bottom feeding debt collectors using illegal tactics to get you to call.  DON'T.