I've just moved this from the Fun Stuff forum to the TamaTown & e-Tamago forum because I am guessing this is not meant to be a "Fun Stuff" game.
I am sorry to hear that you were hacked, but making a topic asking for the hacker to return your stuff is a little too hopeful.
Anyone who took your things without permission is not going to return them to you - especially if you don't know who they are and have no proof that it was them.
Think carefully. Have you ever given anyone your password?
Have you used a different computer to visit TamaTown and had it remember your username and password?
Could it be another member of your family or a close friend who visits your home and plays on your computer?
This is the most likely cause of the missing items.
I suggest you change your password as quickly as possible and keep it totally secret.
In any case, there is not much we can do to help you at TamaTalk since the items were stolen on BanDai's site (not ours).
If you want someone to help you it would be sensible to contact BanDai - not ask TamaTalk members to help you - there is little that they can do to stop you being hacked.