Honestly repeatedly posting this and bumping it up so people keep coming does make it look like you're just doing it for items. I'm not saying you're lying, I'm just saying I don't really understand why you continue to post unless it is for the free sympathy.
And like others have said, this really isn't the place for this as it has nothing to do with visiting other people's towns. It should probably go in Brewster's Cafe.
I'm sorry your town keeps getting reset, and in the future if I were you I wouldn't leave my DS lying around when you're siblings are home as they seem pretty determined to keep doing it. Which surprises me from older siblings, usually young kids would be the ones to do something like this. Anyways, good luck with your new town and I hope this stops happening to you!