Who called from 5203509754

Missed call. Did not leave voicemail. Added to block list.

Same. They called but did not leave message. I blocked all future calls from this number.

Robo caller, survey

some kind of survey

Received call from this number about 45 mins ago but call blocker app blocked the call without ringing the phone.  As is typical for spammer, scammers, robocalls, bad debt collectors, and telemarketers... They don't leave a voice message!  And if you don't leave a message, I automatically assume that you are one of the above and will not waste my time and energy returning the call.