I have complete sympathy with you OP. My then teenage daughter was prescribed a medication to control a condition, 6 months of bouncing between hospitals until we got the UK’s top Professor in her disease. The hospitals were doing the bouncing as her illness was confounding them, one great Consultant said, “I haven’t the foggiest, but I know a man who will!” & referred us to the Professor, under whom he’s studied.
Unfortunately, the drugs had catastrophic side effects; the day we visited the Professor, they immediately admitted her as she was at risk of a stroke, heart attack & her endocrine system was at the point of collapse.
Of course, we were angry & upset with the plethora of different Doctors who had kept her on the medication. As parents of patients we put out trust in their knowledge & training.
When we requested her notes, there was a GP that had requested the medication be stopped, but this was overruled by the Consultant at one of the hospitals we’d been referred to.
This was over a decade ago, and as an adult she is still dealing with the damage it has caused. And, her illness is still not under control.
Of course we were angry. We went through the complaints procedure at the time, there were apologies, but at the end of the day we had to focus on our daughter & move her treatment forwards.
Focus on the now, not the past. Turn that anger into a a passionate, positive force to deal with the situation you’re in now. You can’t turn the clock back, and harassment charges will only make things worse.