They call but say nothing. Hmmm.

I answered. but say nothing.

Just a call with no message SPAM IT UP!!

WCA Subscriber database.  I called the number back since there was no voice mail left.  You have the option if they keep bothering you to unsubscribe.  SPAM!!!!!    I looked up this service and find a lot of not so good things about them..

Yup. Called me out here in Portugal through Vonage. Looks like some company sold our phone numbers! I didn't answer since CID said "Unknown". They didn't leave a message.