Never buy online at HI-FI CORPORATION

ordered online and paid for it and a day later received an email that the item is not on stock and I will get a refund after 7-10 working days. I went online and I noticed that the item is still advertised on special which means I can order it, I suspect that they just want customers money to keep for weeks may be they earning interest out of it....but this sound suspicious. they doing this intentional