Purchasing products and reconciling orders

[Billd11]

I have been using PrestaShop for a few years now. One thing I don't see happening in the updates is a way to actually buy the inventory we sell. How do you buy those 10 widgets you need for order in PrestaShop? I doesn't look like there is a way to do that. The software is great for selling, but not for buying inventory. Is there a way to do that? Is there a module that does that without having to spend hundreds of dollars? is PrestaShop working on that aspect? 

Last week, I sold 4 of an out that was out of stock. My inventory showed -4. I purchased the item change the inventory to 4. Since I had a sale for the 4, my inventory should now be 0. It instead it shows 4 in stock. That is wrong. The inventory increase didn't link to the orders. This is an important issue. I now have to change my inventory to 0 without is showing my order was ever filled by that purchase. I spent money to buy the product but there is no accounting for it. 

I am a purchasing agent by trade so I know how this buying and inventory thing should work. Are there plans to address these things? Are there plans to make PrestaShop a more complete system? Am I not using the system correctly and don't realize it?

Also, I want to links my vendors to my products so I know where to buy them from. Is there a way to do that without putting that on display to my customers?

Thanks,

 

Bill