I'm sorry you went through that OP.
It's spiteful and cruel and calculated to put the child in a permanent state of walking on eggshells never knowing if a particular behaviour is going to warrant another item on the Christmas list being crossed off.
Some people punish their children in really sadistic ways.
My children grew up in the 80s and 90s and I remember one of my children being at a friend's house, they were around 9 or 10, can't remember exactly, when the friend said something that the child's mother took exception to, probably a mild swear word, and the mother punished her by putting hot mustard in her mouth. Horrible.
It really upset my daughter and she never went to the child's house to play again as she was frighten of what the child's mother might do.
Having said that, it's not that different for some children today. I was at my other daughter's house about a year ago, she has young children, and two of the children where being a bit cheeky and not doing as she was telling them.
Her husband decided to step in, slapped both children on the back of the head and took a favourite toy off the older child.
He's a horrible person, so while I was shocked, I wasn't surprised and it really distressed me to see the children being hit and watch my grand daughter so hurt and upset.
Thankfully my daughter spoke to him in very strong terms about it afterwards and he never hit them again but I don't think the nasty punishment of children has stopped by any means in some families.