to add insult to injury idiom
C2 雪上加霜；往伤口上撒盐
said when you feel that someone has made a bad situation worse by doing something else to upset you
They told me I was too old for the job, and then to add insult to injury, they refused to pay my expenses! 他们说我太老了，做不了这个工作。更让人受不了的是，他们还拒绝支付我的费用！