Who called from 3603395269

Me either - no idea.

waits for answering machine to finish, hangs on for 15 seconds, hangs up.

i think this is a 'spoofed number" or fake number

Long pause between when I said "hello" and when he started speaking.  Claimed to be Matt Connor calling from Caller Research.  I hung up before he finished.

Man called asking if I would complete a survey. I said "Yes". He, then asked if there was a man in the house, over 18 years of age only, to answer the questions.

This is the SECOND time I have received a call from someone asking to complete some survey questions, and then wanting a MAN only.

Sounds like a political call to see if the registered voter at this address is a Democrat or Republican.

You know how at the end of a phone conversation you "hang up" the phone? Did you know you can do that at the beginning of a conversation, too?

All cold calls are scams. Period. End of story. You are hanging up on privacy-invading crooks, it's no big deal.