Very confused about property tax situation

[Nat C.]

I bought a house in Atlanta in 2013. I live overseas so I don't get mail that's sent to the property.

I have been regularly checking online the Fulton County tax assessor website for any taxes owing. It always says that nothing is owing. As I've now owned the property for over a year, I was starting to get suspicious as to why there is still nothing owing.

I called the tax office and they said a third party paid the taxes. I asked who the third party was and they said Vesta Holdings and gave me their number to call. I called but the number was disconnected.

When I google searched I found this

http://vestaholdings.com/

'Vesta Holdings is a major purchaser, servicer and owner of delinquent county and municipal real estate tax liens.'

Their website also has no contact information. Can someone please help me out with some knowledge? I'm mortified I'm going to lose the house in some tax lien scheme.