This is a scam call center.  They will start with Foreign callers and then put you on with an American speaking caller who tries to make it not a scam.  he will use the real name of a company that exists but try to call teh number back and you go nowhere.

This is a scam debt collector call threatening to press federal charges.

This is a scammer phone number. I did not answer the call but when I tried calling the number back I was immediately hung up on.

They called me this evening. I called them back several times. They pick up the phone but say nothing.

Idiots call repeatedly, never leaving a message.  I refuse to pick up a number I do not know and now certainly will not as I will not deal with scum scammers. Thanks for the info.