Out of Stock not communicated

I am so furious with the service from one of my formerly favourite online shopping sites. I place an order and pay, get an email its out of stock. I call in and a helpful (at least I thought so) agent suggests I take a smaller size of the same item as it is in stock. I do this, he confirms placing my manual order on the call and delivery details. Today I call to confirm where my order is, it's one day late, and am instead told this same item is out of stock in the new size. They say the agemt tried to call and didn't get hold of me. I have no missed calls or vmail from their number. Why not send an email informing me of the 2nd out of stock so I could have made alternative arrangements like I did the 1st time? but Spree the company was comfortable keeping my money and waiting for me to call and follow up on my delivery. Worse still the ppl who are explaining this to me keep telling me to calm down. Why should I be calm having paid for something and being told twice its out of stock when this is not what i was told when I placed the order on both occassions. Suggestion to them, apologising works better at calming someone down than constantly telling them to calm downdown!!!! I am still waiting for feedback about the whereabouts of the rest of my order that is also late... VERY DISSAPPOINTED