federal reserve bank a middle eastern lady kept charging me for a free grant from the government and tried to also charge me for cancellation washington D.C. district of columbia

I got a call from a lady claiming she works at the federal reserve bank in washington D.C. and that i got a free grant for paying taxes on time. She charged me $200 at first and then claimed i had to pay new york state government $1000 just to get the money. I tried to cancel but she told me i had to pay $200 for a cancellation fee just to get my money back!   She swore it wasn't a scam. She couldn't even tell me how the state government contacted her. My question was why would i have to pay her $1000 if i was suppose to pay the state government. Now my family is suffering from a lost of $1200!