Have received (so far) today six calls!!! If we answer it, we get a recorded 'Good Bye'. We have signed up for the 'DO NOT CALL' list many, many times.
Once signed on the DNC Registry always signed unless you opt out. Each time you re-sign up, your number goes into limbo for 31 days until it is regenerated on the next update.
In other words, you're shooting yourself in the foot each time so DON'T DO THAT!
They called many times saying I won a grant from state but its a scam he took money off my card and after calling for hours he finally picked up then hung up when I told him who I was