I'm going to get my ex girlfriend fired from her job.
Why do you want to get your ex fired?
She was being too nice to me when we were a couple, but then she failed to please me in bed.
You should not meddle in the work life of anyone, especially someone you know. Rather than getting revenge on your ex, just move on and find someone new in your life.
I was the best thing that ever happened to her and she needs to pay for it. I'm going to file a complaint against her.
That doesn't have anything to do with her job. You need to just get away from her and stay out of her life.