I got a call from them too... however, I canceled my verizon cell phone service that had a 571 area code and I have moved out of state and now have a different area code and they called my new phone with my new area code..I didn't answer the phone..
This is a spam caller saying you are receiving a government grant, which is a complete scam. Please don't fall for it. After I had mentioned that I report him to the authorities when he called me back, he laughed at said I was losing out on my grant money and hung up on me.
I got a call from 571-515-5555: and the guy claimed I have been selected to receive a grant from the US government when I asked him about how he got my number and my address he told me to speak with his boss both of them were speaking with a heavy ascent they could not pronounce the name of my state which was North Carolina that was funny so when asked him why he could not pronounce the State name and he claimed to be calling from washing and he just went mute over the phone so I told him to [***] off the phone Lol!!!