Business ProfileforTable Rock Resorts

On July 26, 2022 I reserved a cabin on Table Rock Lake through the Table Rock Resorts Website. The 5 bedroom cabin was listed for $0 per night and I reserved it for six nights: July 24 to July 30, 3023. I paid the total balance of $0 with my ******** ******* credit card. The terms and conditions listed that the rate would not go up. Upon reserving, I received a valid confirmation email (see attachment) that listed the cabin was booked for my desired dates and confirmed that the cost was in fact $0 per night for a total price of $0. Six months later, just a few days ago, I was contacted by Table Rock Resorts. They said there must have been some mistake with the card or payment and I had been billed $0. I told them I knew it was $0, that is why I booked it, as that rate was acceptable to me. They seemed surprised I had a confirmation email. I forwarded the confirmation email to them for verification. They responded two evenings ago, January 17th, saying that I must pay $10,260.97, and must put down 50% of that cost by 6:00 p.m. the next day (January 18th) or my reservation would be cancelled. This is clearly illegal. I am a consumer, I did nothing wrong. It is not my job to run their business for them. I have had this reserved for 6 months. I paid the price the website advertised the cabin at, my dates and payment were confirmed, and I received a confirmation email that listed total price as $0. I emailed them back yesterday morning letting them know I expected my cabin for the original accepted and verified rate. I do empathize, however, and I offered to compromise by reserving one of two possible smaller, less expensive condos for $100 total per night after taxes/fees for the same dates. If not that, I expect my original booking. When they did not respond, I called. They said they forwarded the email to the CFO and he would get back to me. He has not. I emailed this morning, no response. This business is breaking contract and law. THANKS