Do not press any number if you are prompted to do so. This will put you on the "chump" list, and you probably will receive more spam phone calls than you ever imagined you could.
504-521-7185 called my cell; didnt recognize the number, so I didnt answer it. I used a landline to *67 Number Blocked call back - got a fast-busy tone which means its a disconnected number.. That is an instant giveaway that it is a criminal gang of credit identity theft phone scammer phishers trying to screw me over.
I have an Android phone so I use the Blacklist Pro app to screen these calls. I save all these SCAM numbers in one listing under "ScamCo" and when they sometimes call back, the call gets shunted to a no-name number-only voicemail.