In November 2009, I had to do this with my mother after she called to complain that I didn't contact her for help to pay my university graduation fees (I graduated in-absentia; long story), and she also complained that I need to "get over" her divorce from my father. Well, I wrote her a note after that phone conversation, in which I blasted her for
abandoning me and my brother on a rainy night while my father was out of town, while simultaneously using a moving truck to cart away literally everything that could be moved (I kid you not); and also for her accusing Dad of cheating on her during their marriage (he didn't), but conveniently forgetting how she got involved with a much younger man who is currently her husband, and how she refused to go for marital counseling with Dad when I suggested it to them. My writing the note caused some tensions against me by my mother and older brother; things have calmed down since then.