Who called from 3023048748

Received call several times in May. Never answered because I did not recognize the number. They never left a message. If it is a debt collector (as mentioned by Sid) then why are they calling me? I am one of the fortunate few who has no debt!

If you are listed on a relatives credit check  they  will call you  trying to get in touch with them

If you call it back from the phone they called you on, you can have your number removed.

There's more than a good chance that calling them back will not get you removed from their calling list, but in fact will cement the fact that your phone number is live and therefore eminently scammable.

Never call back an unknown number.

I agree. Some of these numbers you don't recognize will be a cost per call number and if you call it back, you can be charged as much as $25/minute.  It's better to use your cell phone company web site and block the number