If you offer next day delivery on an item, then it should be next day delivery. If you send an order confirmation stating that I will notified when the order is dispached and provided with tracking info, then that's what I expect to receive. Reader: neither of these things happaned. When I have to call you to ask where my item is, I can do without the facetious response asking how much I paid for next day delivery (£7.20), before being told it was sent Royal Mail first class and implying that I got what I paid for. Spoiler: Royal Mail first class is not next day delivery. You can spend money on a nice logo and a chummy website: but if you don't do what you say you were going to do or show some contrition when mistakes happen then your brand is just all fur coat and no knickers. Do better.