Got my niece a New 2DS LL. The seller showed working pictures but freezes when opened and closed. How can we fix it ? Are there any good repair shops in Tokyo?

Got my niece a New 2DS LL. The seller showed working pictures but freezes when opened and closed. How can we fix it ? Are there any good repair shops in Tokyo?

Got my niece her dream Pokeball 2DS LL on Merukari. Seller showed pictures of screen working. It arrived the screen freezes when closed and opened. How to fix?

She showed me it on Merukari and she really wanted one for a while and decided to get it for her as gift. Saw the pictures and asked the seller if it was operational and he said it starts up.

However when we received it, it freezes on the screen constantly.m after being closed. Asked the seller if it could be returned and he pretty much refused and said sold as is, though he never mentioned it freezing.

Are there any good repair shops in Tokyo?
Is there anyway to fix the 2DS LL?