478-338-9134 Calls my phone and when I answer they hang up. I call back and they end call. Macon Ga is where it is from.

NCS Litigations.  This company is looking to serve legal papers to you directly for what, not to sure.  They call your work and state they will come in with local police enforement to serve the papers directly to you.

This may be a VoIP service similar to Google Voice which shows the same Caller ID for all users.  We get a lot of very legitimate calls - lot of pretty intelligent students calling our answering service tutoring customers - have to look into this further.  We did get one call with Macon GA as the ANI Name though but it seemed legitimate. Our customers received 68 calls with this caller ID from May-July 2014.

this is one of several outbound #'s that phone.com uses when I tried to use a # for a temporary incoming line for online ad for a yard sale.. tried to use this to call fwd to my cell & all sorts of different caller ID was showing up, was a real hassle since I was trying to watch my calls on a day off from work...had to answer all since I couldn't differentiate who was who...

update...
this was not the # people were calling, but one of several that showed on my CID ...