FirstStop fails to deliver yet again.

I read the reviews before I placed an order for the items and thought that, let me give them a try, maybe they've improved - how wrong was I. Let me give you the ups about Firststop. I placed an order for three items on Tuesday night 13 May, received notifications about the order - they practically kept me up to speed and received my order today - which is great, BUT, I only received ONE item while all three items were indicated as in stock when I ordered. I double-checked to see after I read the reviews of poor delivery. I phoned their customer services; they told me that they didn't have a specific item in stock and had to order from a company and will be invoiced on the 17th, which is a Saturday, by the way, and they don't work on Saturdays. Why then advertise the items as available when you do not have stock? The agent also told me that the other item will be delivered tomorrow, 16 May. Would I use FirstStop again? ...maybe, only if they improve on their available stock or give me a discount on my next order as an apology.