Seller Credit from Occupied Home

[Lucky B.]

Hi,

I am the high bidder on a home via Homesearch and I did not meet the reserve, however after 15 long agonizing days, they decided to send me a high bid confirmation email, followed by the sales contract, the following day. The sales contract stated that the lender is only giving me a $750 dollar credit because the home is occupied, but my agent recently told me that the house is not longer occupied, and that the tenant who was living inside  moved out. The house is in immaculate condition, knock on wood ! 

My main question is should I push back and fight with HomeSeach to give me a 1500 credit, instead of $750. They gave 1500 when the house is not occupied. The listing agent also advertised the home stating that there was a long term tenant in place, and I actually wanted that. Now I have to go look for a tenant. I relied on the listing agent's representation of the property and I feel that the seller or Nationstar ought to make this right with me for having to search for a tenant now.