The man who served me saved the day.
I had ordered some card for click and collect and added a couple of colouring books to make up the order to the minimum £10 for click & collect. When I got to store the man said “unfortunately there’s a mistake and your card is out of stock but we have got the colouring books”. I explained that I had only added the books to make up the order. He refunded me for the whole order but insisted that I take the colouring books as compensation for the wasted journey. What a kind and thoughtful gesture that meant I left the store without feeling unhappy. Sorry I forgot to take your name.