question about auction property?

[Luis Melendez]

hello bp members quick question for you guys. im buying a property that i won on an online auction. the building was occupied when it was taken over by the bank. so when they listed it online it was listed as "occupied". currently its vacant now cause tenants left and bank cleaned out the property. Now im set to close next week and the banks attorney sent my attorney the hud stating that the buyer is responsible for paying water/sewer bills because it is "occupied". has anyone had a similar issue relating to this and if so did you negotiate out of paying it or did you just have to bite the bullet and pay it? I wouldnt mind it if it was a grand or 2 but the water and sewer bill is a little over $13k!!! ouch. Any help is much appreciated. Thanks