"Spoofed Numbers: Caution, 684-621-6375 is a "spoofed" number, which means that whoever called you "tricked" your caller ID to display an incorrect phone number. Telemarketers do this so you cannot complain, but they failed... you can still file a complaint here to fight back against unethical telemarketers."
684 area code is American Samoa. Blocked the whole area code on Panasonic phone which can block up to 250 numbers, including "range of numbers" (area codes). Probably this was a bogus "windows fix" call--many of those came this week based on posts in 800notes. We don't answer unknown numbers, but do have ans. mach. on for msgs.
Called once and I answered, no response so I hung up. Called a second time and claimed he was Roger from Windows IT Support and he was calling to fix my Microsoft Windows computer. Told him I didn't have one of those, so he panicked and hung up.