got a call today about "free grant" money.  Gave another number to call and give my Credit Card number to transfer the money

I was supposed to take a trip to Washington, DC to claim the money.
The man's voice sounded very much like the calls I've received claiming that my computer needed repair--\
which can't be true because I got those calls before I even bought a computer.
I understand that those calls were also from Washington, DC.

Keeps calling wanting my credit card expiration date and pin # wanting "to reduce my interest rate",,, I hung up first time & called my CC company... They told me its a big scam & if I did give info to shut down card - get new one BC with info requested they could use my card anywhere. They call about twice a week now but change numbers frequently. They say they are card services but cannot state what card

Received a phone call from this number. It was a gentleman with an Indian accent claiming he was from the Department of the Treasury and I had been selected to receive a $9000 grant because I payed my bills and taxes on time.  Fortunately, the call got disconnected.  Be very wary of this one

Got a call from this number this morning. I don't answer calls not recognized by caller ID. I let the answering machine answer - then I'll call back if required. I blocked the number.