If it will not fit
What to do when the case is the wrong size, the wrong finish, or arrived in worse shape than it left.
The return runs through the shop
Because the sale happens at our retail partner, so does the return. Their order page has the window, the process and whatever label or drop-off the case calls for. Start there, not here: we cannot open, approve or track a return, and we have no address to send furniture to.
Repack it the way it came
Furniture returns go far more smoothly when the carton looks like the one that arrived. Keep the box and the internal foam or cardboard corners until you are sure the piece is staying. Put panels back in the same order with the padding between them, and drop the hardware bags back in rather than leaving them loose, since a stray bolt rattling against a panel face is what causes the damage.
If you have already started assembly, take it apart in reverse order and keep the cam locks and dowels together. A partly built case will not go back in the carton, and a half-assembled return is the one thing likely to be turned down.
Damage, and the size problem
Photograph damage before you unpack any further, with the carton in frame. That single photo settles most claims at the shop in one message. For a missing bolt or a short hardware bag, tell us as well as them, because that is a factory packing fault we can chase.
If the case simply does not fit, the honest fix is a tape measure and the wall fit bench. Feed it the span you actually have and it drops everything wider, which is a cheaper way to find the right piece than sending the wrong one back twice.