I got the call also and they told me to buy a green dot prepaid money card. Then he wanted me to put 200 dollars on it for a one time transfer fee. At that point I hung up and blocked the number.
I got the same call about the 8000$ I told the people I already had the card and wanted the card info. I made up the info and the guy told me I would be receiving my money in about an hour. Complete scam