I quote:
"Dear XX
Thanks for the thank you card. Thanks also for the teapot and mugs.
I am however perplexed by the presents you gave [XX ( his son) XX]. Clothes for a five and a seven year old. Five, I could just about understand, as something to grow into in a couple of years, although we thought it a little peculiar, when paired with a card for a three year old. Seven, I'm sorry, makes no sense whatsoever. XX [his wife] and I found it quite upsetting.
I really don't want to have to experience a feeling of dread every time we get something from you, which is the case now. I would therefore prefer not to exchange cards or presents in the future.
I'm very pleased to hear that you have found a nice house that that [XX your son, ie my own son] is settling into the new school and [XX your daughter, ie my own DD] is thriving at her school. We wish you the best of times."