I live near this area code so same time zone.  Received a call from this number at 6:363pm yesterday, which was a Sunday.  Did not answer and no message left.  Caller ID just says +13603206988.

Answered and a recording said it wanted to do a research, and asked a few questions. I Hung up. Then it called back again about 1/2 hour later. Did not answer.
Lists the caller from Oak Harbor WA.

Yep, Caller ID just has the number and then it says Oak Harbor WA.  Sorry, ain't falling for it and ain't answering it.  They called twice in one day.

Irritating~

I called this number back and got an interesting message, explaining it was an automated survey number, and was exempt from 'do not call list', but recognized that some people find getting any calls annoying, then it repeated back my number and told me I was added to their do not call list and they would never call me again....I thought how nice, if true.