I received a call from this number around 3 PM EDT on Wed., Aug 12, 2015.  As others have reported, my call was a credit card scam telling me that while everything was okay with my card, I needed to talk to them about lowering my interest rate.  I know this was a scam because I don't use any credit cards and by extension have no balance on which the interest rate could be lowered!  I simply hung up ... no need to risk given them any information or feedback at all.

Scammer unlisted number

Calling me at 6:15 AM is harassment and they said nothing.

robocall from    910-359-7643 caller ID said "UNKNOWN NAME" on Wednesday 08-12-15 @  319 PM.

called and rang twice and was not able to answer before it stopped ringing.
see by other responses it was Rachel the SCAMMER to lower credit card interest.

Add a selection in your phone called annoying callers. Set that entry to auto reject or straight to voicemail. When you get a call that you don't like, add it to your list.