Full grip on trailer purchase What can you do?

Hello had already created a topic a few days ago to WW. You had advised me not to buy the part because it was a little mesmerizing! According to the previous owner he once had a water damage, which has been repaired. But from the beginning: WW HOBBY 610 had seen at ebay, shortly before the auction end the seller took it out, then had called and visited it. Looked good, except carpet and there were small cracks in the WW on the ceiling. But didn’t bother me. Müffeln came from the bathroom. War a plastic set in it, which was probably torn. I removed everything and converted it into a storage room on the WE. Almost whole WW with new carpet laid (were only occasionally black stains on wood) stink was gone. I was so blind when buying! now it goes on: – Rollos do not go back in the lead (but they can all) But did not bother me. What bothers me is this: The seller said and crossed on purchase contract that the part had no water damage etc.. Only rain Today it is heavy, about 3 hours. If I come in today and roof hatches run the water on new carpet! If I have also repaired, is now dense. All 4 corners are wet, but only minimal. Moistness has never smelled. I get angry……. But when I see this one CAN MAKE ETWAS AGAINST THE SELLER(PRIVAT)UNTERNEHMEN WHY HE YES WOOL:::::HAT THANK YOU ERSTMAL:MUSS MAYN’T MAKE A TRINKE HOPE YOU DOWN: I CANN’T SET IT ONLY DOWN: What am I going to do?