SERIOUSLY NOT HAPPY WITH YOUR SERVICE.

I place a order on Saturday for 4 pairs of sterling silver earings that was on a massive special, all in stock when ordered, paid and received my email that my order will be shipped and I will received a feedback when it has arrived at the store, a few hours later I get a email that three out of the four has been cancelled due to no stock and I will be refunded, so I called and was told that this stuff happens when they over sell, so how is it my problem if they over sell, I can't order something else because what it the chance that this will happen again, I will never get them for the same price and I feel it's a bit unfair, not happy and apparently your online store is not trustworthy.