Who called from 3018428632

Multiple calls on different days from 301-842-8632. Caller ID says "SSI".  Hangup with no message when not answered.  Will block further calls.

This phone number 301-842-8632 belongs to SSI - Survey Sampling Independent. It's a survey company.
I received the same call tonight 12/19/2014 at 7:54 PM and after listening to my VM, which was quite amusing, as they thought I had answered my phone, in which I didn't.
Number is now blocked.

Good information on your post.  I've been receiving calls from this number but not answering them and no VM left.  I figured it was one of the scammers who tell you you're in big trouble with the government/treasury/whatever.  Nice to hear its just someone doing surveys

They have another # also. It is (301)842-8798. Will block this # also. My Panosonic phone blocks 250 numbers. Purchased from Costco.

Yeah the SSI really had me going