To add insult to injury
Help the other person, and don't add insult to injury.
To add insult to injury, France didn't even top the vote for best foreign food - finishing second to the Italians.
It was raining heavily, and then to add insult to injury, a gust of wind blew away my umbrella.
My car barely started this morning, and to add insult to injury, I got a flat tire in the driveway.
It is the victim who is often put on trial and, to add insult to injury, she is presumed guilty until proven innocent of provoking the rape.