Who called from 5735356035

Anybody recognize this number?

I called and they wanted my last 4 of my SSN. I told them they got the wrong number and hung up. I did a search and it claims it is a cell phone number. I highly doubt bill collectors would use cells phones or spoof numbers in order to get money. I tried to get their name but it didn't sound right.

I received a call from this number (573-535-6035) around 5:30pm.  It rang twice, they hung up, left no voicemail.