Equity lifestyles -Bay Indies Fraud sales practices -bait and switch Venice Florida

On 11-23-2013 I made an offer in equity lifestyles bay indies mobile home park.  It was for a trailer being sold for $500 that needed work.  I told them that I had a foreclosure on my home and needed to be out 12-24-2013.  My brother who was moving could be the financial guaranteeR.  His name would be on the lease, mine would be on the title.  The sales person assured us that would not be a problem and we signed the offer.  Then she went on vacation and I dealt with her assistant Who was processing the agreement fully expecting to close in a week.  When I checked with her there was a delay on a couple of hits that came back on my brother, (a twenty year old petty theft charge and a minor 15 year ago possession charge). I asked if there was any explain actions needed and she said they were pretty self explanatory.  They would delay the closing but they were not saying no.  Then she called back saying they ran the check on me and a foreclosure red flag showed up.  I assured her that the sales person was aware of that and it was why I was not on the lease.  She stated that was not the way they do business.  Since he was not 55, I had to be on the lease.  I explained how the foreclosure happened and why.  I called back and was told it was okay on 2 conditions, 1- a double deposit of $1600 plus.  And 2- direct debit the rent..  I explained we were never told about any deposit requirement.  Basically their response was tough.  That was what they wanted.  What they did was price it above its worth and looked good saying they approved but I could not pay the deposit they required.  What they really did was bait and switch and in my mind it's fraud.  Their sales person had to know the rules quoted to me she had worked for this reputable company for 2.5 years.  Now I am trying to get my down payment back.