Who called from 6237451933

no answer when called back

Answered call, and after saying "Hello" a few times, there was only dead air, then the caller hung up. I have since blocked the number.

Another call from this number....I do not answer #s I don't know. This one has called 3 times...have been getting plenty Robo calls lately so blocking this #

"I'm  sorry I didn't hear that. Can I ask you a few questions before I transfer you to a travel coordinator?"  That's how the call starts. They pretend to be a live person but it's actually recording because it repeated.