Product arrived missing parts - CBC Industries AR-15 Complete Upper Receiver Rifle Kit, .223/5.56, 16in

I ordered this with hopes of building a rifle. This is a parts kit. When it arrived, it was missing parts--on my first scan through, the buttstock if others are not missing.

I've built several rifles in the last few years. I've used products from other manufacturers/companies.

I'm pretty let down and upset that I am missing this piece of the product. When I attempted to contact the company, all of their phones went straight to voicemail.

It could be that they were all busy at the same time, but That's how this goes.

Now I have to go find at least another buttstock.