bought repo in Wisconsin

[Duane]

recently bought a very nice repo in Wisconsin and was told by the mortgage company that there were back lot rent due of about 1500 that needed to be paid. I paid it and many other fees like late rent fees, garbage and perosnal property taxes past due, which didi amount to about that price. I already own an older mobile in Wisconsin and bought this newer one at a VERY reasonable price, and it was in extremely good condition. The new home seemed to be basically held for ranson from the park until the back fees were paid. I did not want to argue and jeapordize loosing it or having problems when I came to move it out as I was on a very tight time schedule, so I paid the fees just to get the home out. Now that I have it at my plot of land I own, I am wondering if I can ripped off. I know Wisconsin property taxes are not tied as liens on a mobile home, and they are supposed to go with the owners personally, and not the home. I can , perhaps understand back rent, but late fees and garbage fees when no one lived there is a question. The people left several months earlier.
Do I have any recourse on attempting to get some of these fees I paid back, and where should I start? Who can I ask?
These are the questions?
1) Am I liable or forced to pay the past due monthly installment the park collected for personal propert tax that the prior owners did not pay ?
2) Am I really liable for past lot rent and late fees or that amount for monthly installments?
3) Garbage pickup fee when no one lived there?
Again, don't get me wrong, I got a very nice repo and know what back fees the mortgage company told me may be due, and would do it all over again in a heart beat, but I am wondering if the park used me to get their money back when I was not responsible leaglly for it, and what if anything I can do now, assuming I want to persue the matter.
Thanks