Who called from 3013302851

Me too. Got a call from them this morning (Sat, 12-06-14). Who the heck calls before noon on the weekend? I didn't answer because its an unknown. Googled it just now and found this site. Called it back and it said number not in service. Ha!

Just got a call from this number but did not pick up.

Just got a call.  Don't know anyone in MD, so I didn't answer.  After reading the responses here, it appears its a credit card scam

Just got a call...didn't answer and no message left...

They just called me twice, 30 minutes apart.  I don't answer calls from anyone I don't know.  I'm also on the "Do-Not-Call" list, but that's apparently a scam, too.