What to do when an item is missing a piece? Is there a way that I can go get it or that it can be deliver?

There's a place near the exit where you can get spare screws, pegs, and missing hardware.

I have gotten replacement parts twice over 10 years and they still send you the part you need directly to your home without driving to the store. Saves on gas

It can also be delivered to you but will take a few days. Contact the store

They have a customer service number in the packages I bought for missing parts.

You can also check with returns to get spare pieces