Taxes owed at closing

[Jay Crizzle]

Sold house in september.  In recent days closing agent has contacted me and said we didn't pay enough in taxes and we owe the buyers large sum of $ right now because he paid too much. Apparently the closing agent/ title co factored in our previous years tax bill (in which the house was homesteaded ) instead of the last year we owned (it was a rental property the last year of our ownership). The tax bill has been paid in full at closing. I dont have access to that money at this time. Isnt their some bit of responsibilty on the title agent for not doing due diligence and seeing if the house was homesteaded? If I owe the money I will pay but it seems like somebody dropped the ball.