Ahoy,
I responded to your email some 7 days ago and handed it over to the shop team. I'm sorry they haven't got back to you yet. I've duly prodded them.
Our response, when dealing with missing Royal Mail deliveries, would often be to wait 21 days- things can go temporarily missing and spontaneously turn up- but since it's already been that long I've no doubt a replacement package will be shipped to you promptly.