Server Closed in the Middle of the Champion Battle

[Auronhimm]

I was doing the Champion battle against Gary in the Kanto Region and, in the middle of the battle, the server was closed. When I came back, I was sent back to the beggining of the Elite Four and all the itens I had used was missing from my bag, as well as the money I had used to buy them. I don't have money to buy new ones and I can't win the Elite Four without the reason. There's any way that I can solve this? I had 15 revives, 10 max potions and 10 super potions before, and now I only have 8 revives and 3 max potion