“I ordered 2 items in the sale, which I have done before, to spread the postage costs. The next day I got an email to say that there had been a computer error and 1 of the items was out of stock. I emailed back saying that if I had known this at the time, I would have ordered a different item which I was loath to do now as I didn't want the expense of the postage a second time. They emailed back straightaway with a code for free postage, this resulted in another sale and one happy customer.”