disputing property taxes!

[David France]

Hi

Iv had a tax bill for 2010 of $2500 and a tax bill for 2011 of $2900, these are ridiculous, i paid $20,000 including rehab but it shows i paid $10,000 for it as its a fanny mae repo. I have been told there is a dispute process, does anyone know how i can do this? i was told i cant dispute until march why is that? any advice on how i can lower these figures would be great

Thanks