Help me !!! i sell my wp NPC shop how back !!!

I played the game with a controller, when I was selling items to the NPC, I accidentally switched it with my main weapon and sold it. When I discovered it, it was too late to buy a back item from the shop. Is there any way to get the item back? Thank you.

Try to make a ticket to support. But, they are wrote that wont return missed items, so... Barely somebody might help you :\