Anyone else getting calls from this number?

Called. Left no msg

Just called me asking for a relative by name; when I asked who was calling, he identified himself as Mike Stirling (Sterling?) and wouldn't give any other identifying information. When I said she wasn't available and offered to take a message, he didn't want to leave one and just...was really cagey overall. Said he'd try again later. He's just going to get me again later, so...have fun with that. Probably a bill collector or telemarketer; I asked my relative and she'd never heard of him and didn't recognize his number.

Update: I decided to call back and tell them to take my cellphone number off their contact information. Got a recording that says it's Enterprise Recovery Systems.