You're talking about a good ole case of ignorant incompetence. While it isn't illegal, it does imply you might ignore this PA in the future and only schedule appointments with the Doc until his PA goes back to school and gets a real degree. Who says higher education is difficult to achieve? While it is true that Everyone has an off day now and then, this is a little more than that...she knew you had cancer surgery scheduled. By declining to see her (PA) for a while, you will send a message. Next time, she needs to take that extra step.
Nothing worse than a medical professional who ignores a complaint of acute pain with no known origin. Any acute pain of an unknown cause requires at least a little investigation. Might be nothing or, it may be something. This following has nothing to do with anyone here, but I have a short story; about an EMS call for a man with testicular pain. That was his only complaint.
Something didn't seem right with this man so, I went with my gut and treated him accoring to what I was seeing, not what he was telling me. My "nurse" partner thought I was strange, but she went along with my train of thought anyway. Before we left the scene, we did all of the necessary medical interventions, "just in case", because he looked like every cardiac patient I had ever seen. None of his vitals, nor the ekg indicated heart problems. It was more due to the acute nature and his appearance. Acute alone would not have led me to think cardiac. Added together with a generally lousey appearance, I thought, wow," this guy is NOT having a testicular problem; it's more than that". Most importantly, I asked him to describe exactly what kind of pain, where and how the pain felt and/or if it radiated. He described exactly what I was seeing by telling me the pain was in his testicles yet rose up "then burst" out of his chest! Who's a thunk??? Looks ARE everything!! The gentleman had a triple bypass that day.
Get well quick GTO and best wishes for a speedy surgical recovery.