I received many calls from this number starting this past weekend and resuming at about 7:30am this morning.  The male caller claimed to be from the FBI, told me I was in trouble with the law, and "they" were going to show up and arrest me unless I paid them $1000 to send me the correct "paperwork" that would get me out of trouble.

THIS IS A SCAM, do not answer them!  Tell them to show up in person with PROPER identification, then immediately hang up and call your local law enforcement and report your conversation.  If someone actually shows up, talk though your CLOSED door, call 911 to report a stranger harassing you on your doorstep, and tell the visitor that the cops are on their way to check them out.