Lost Bob's Mansion and Pond

I think they will fix your problem when you run into a knowledgeable person. If they don't, I understand your frustration. I gave up on Roller Coaster tycoon due to similar issues. I'd sometimes lose items that I bought with tickets when I visited friends. I got so annoyed that it kept happening that I gave up on the game. I hope that doesnt' happen to me one day on Tapped Out!