<human>: I recently ordered a phone from a buy.com marketplace seller.  It looked to have a pricing error but I went ahead and placed an order in case it wasn't or they would honor it.  I have no problem if they emailed me and said "Sorry, we made a mistake and have to cancel your order".  They instead told me that they sold out and were ordering more to fulfill all the orders that were placed and would ship it when they got it.  They called several times keeping me updated which was very nice.  Between the time they talked to me and it was shipped the phone came back on sale for the same price for 2-3 days.  It is now halfway to me on the delivery truck and they called me to say there was a problem.  In a rush to ship the orders as quickly as possible they did not look at the phone and the vendor sent them a much cheaper phone instead of my phone (the normal price for the cheap phone is the same price as they had for the phone I ordered, same brand).  They also told me the cheaper phone was pretty much the same as the other phone just smaller (camera was about half as good, almost no internal memory, screen was worse, didn't handle as many formats, etc). They said I could either keep that phone for the same price or get a full refund.  I said I wish to get the phone I ordered.  They stated that was impossible because none of their vendors offer the phone in question. So, of course, I said I wanted a refund.

The reason I am posting here is that I do not wish to just post such damning feedback even though I am a little upset over it.  If they don't refund 100% of my money I can contact buy.com or even my credit card so that shouldn't be an issue.  I just don't want others to fall prey to them if this is an actual scam.  Do you think buy.com would investigate it since it would also look bad on them?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Sold a product they didn't have / couldn't get and then tried to sell me on another phone that was already halfway to me and would make them much more money.