It is a scam for a 8,000 grant. This is being investigated by the FBI and FTC. Don't answer the call and report it to the FTC - get help from your local carrier to block the calls. They will ask you for your bank account and or a credit card and it cost $250.00 to apply for this grant. You can apply for any grant the us offers for free. Their bad english and violent disposition is a good give away that they are not legit.