Over the holidays last last year I was building an Airfix model (good way to ignore the outside world) and discovered two pieces had fallen off the sprues and were not in the box. I considered constructing them myself but I didn't have a good reference image to go by. 99% certain it wasn't my fault, I looked up how to contact Airfix, followed the instructions, and never heard back.
Until Friday, when two tiny pieces of plastic arrived in an adorable little pouch and the modelmaking can continue.
I love good customer service. I just love it.