Who called from 3033236235

They called me asking for my wife? They said they only wanted to speak to my wife. The woman's name was "Terry" she was asking for her because she wanted to speak to American voters. Then when I asked what company she was from, she said "I'm from pro life comity, we raise money for premature babies". I then asked why she would be calling my wife then? She just replied with "Oh, you live there too?" I then said I would call the police because the number blocked me after, and the lady sounded like a recording. Iv'e never seen that number before, it started with "300-". It was all very suspicious to me. Btw they also blocked my number instantly when I threatened to call the cops.

Over all weird experience

Yes, same here. "Terry" called looking for "Linda". It took me three times to tell her that no one named Linda lives at my home. She then asked if I live here too. Uh, yeah. Then told me, for the second time, that she is Terry calling from the pro-life committee and am I pro-life, pro-choice, or somewhere in between?
I answered that I am pro-choice  (not here for political debates or anything :)  ) and she immediately hung up on me.
Just seemed pretty strange for a "survey" call.....

(303) 323-6235 this number called today.  Called it back and it said this number isn't in service any more.  I called back within 1 he of it calling me.

Same here. They called and I initially ignored it, but called back within 40 min and it said not in service

Some numbers don't accept incoming calls. That may be one of them.