So i won at auction a 329k home for 200k, 6 days later auction called wanted me to upper my bid. called fannie?

fannie mae and got et manager for that listing. told him how heartbroken i was and how i was not informed about the "undisclosed reserved price". he told me to put in an offer within 5 days(post auction). i told him i couldn't afford more then the 200k. So i said ok. waiting to hear back.Auctions are Scams! So do you think he's gonna deny it ? the house been on market for 154 days. He did say he never got an offer on the house.(i told him how fannie realtor never wanted to put in my offer)and how i had to go to auction to bid on it. when you see a williams and williams auction run the other way. they tell you won then they try to get more money out of you.