Can a closing lawyer collect taxes from me (evidently missed on the closing) on a property I sold 2 years ago?

Two years ago I sold a vacation property through a national real estate broker. I recently receive a letter from the closing lawyer stating there are unpaid taxes for part the year in which the property was sold. He gave me an amount he stated was my share and requested a check. I don't have the money to pay the taxes and assumed they were handled at closing (that's what I paid the lawyer and real estate firm for). Am I responsible for the taxes if they are in fact due or should the lawyer's or real estate broker's bonding company make good on the mistake of the professionals I paid to represent me in selling this property and cover the taxes?