Part Shortage?

Hello,

I bought 2 gaming PCs for my wife and I, our first summer with a little extra cash. Our order was supposed to arrive june 20, and we confirmed our order may 23.

We kept having multiple issues with the order showing and kept calling in. They told us not to worry and the order would ship on June 17th.

now it’s delayed, an unknown amount of time due to a part shortage. How can a desktop sold on sale have a part shortage? Sales are meant to lower stock, or did they sell units on sale, but then an influx of full dollar sales take priority over our order?

This feels weird.