So, are they trying to screw me(real estate)

I am in the process of buying a house. The closing is supposed to be May 12. I can't meet that deadline because the VA requires a paint job on the exterior and the weather in Montana won't cooperate. I told Quicken that it would hopefully be June 1 before it could be painted. THEY said they might have to charge me more but they won't tell me why or how much. They are being sneaky I feel. Or not being totally honest trying to squeeze a few more bucks out of me. Bankers are on the list of people I don't trust also. And they know I know nothing about buying a house. I thought the VA would protect me, but I don't know that either. Can they charge me more money. Could this screw me out of buying the house because I only got so much money and I totally refuse to over extend or live beyond my income(fixed). the oil boom out here is trying like hell to create another housing bubble.