Called me at 2015.0603.1220 and it rang for about 2 sec. No message left.

just got a call from this number on my cell phone while I was working. I have the Mr. Number phone app that warns me if an incoming call is from a spam number. If so then I let the call go to voicemail where surprise, surprise whoever it is whose trying to reach me doesn't leave a message.
I called this number using *67 to hide my number appearing on their caller ID. Turns out they calling in regards to me visiting one of their websites and qualifying for a rewards package. Funny thing is they don't mention thee name of their company or the website in question.
Do these numpties really think I'm going to fall for their scam

Blocked!  Scammer,

Called me a minute ago and hung up right away

Just like most of you, they called me (twice today) then hung up.