If you purchased through an estate agent they must know of these pitfalls and I would suggest they are culpable of not informing you of these facts.
Also check if you can not offset the costs of the refurbishment against the tax you have been asked pay.
I have warned people in the past never ever trust certain estate agents over there, do your HOMEWORK when buying a property, it is nothing like buying a property in the UK.
I have actually found out since selling my property that a tax I had been paying for the last 17 years that if I had not paid the Government, they would only go back the last 5 years to claim that tax.