I'm wondering why you didn't just ask the seller where the written disclosure is, if you already knew about the mold from your conversation together. If you knew about it, you could have asked the Seller to repair the damage and the issue that caused it. Read your contract. The answers you're looking for should be spelled out in the contract you agreed to. What is your agent saying? You never mentioned whether escrow already closed, or if you're still in your inspection and reports contingency period. I'd talk to your agent, that's what you hire them for.