got a call, did not answer, just came to look it up

Called when I was out.  Says Service3Call on caller ID.  Have received calls from ServiceJCall before and numerous collection agencies who call to ask for someone other than me.  I have perfect credit.  Think either telemarketers are gathering personal information to sell the telephone number and information they can get from the person  they called, and/or give information to collection agencies that they have requested these callers to get for them under the guise of being a telemarketer and not affiliated with a collection agency.  These kinds of calls all started at the same time.

They called and when I answered they hung up.

Call could be CNAM dipping to charge your phone company by requesting the information off your caller ID system.  Would explain the hang up.  Look up information on CallerID4U.

Keep calling never answer phone # not on my list