Any time my wife has been given the run around by doctors, I usually ask for her to schedule another appointment so I can be there, and I demand the doctors put notes, make something on the record that they SPECIFICALLY ARE DENYING TESTING and the reason behind it before I will leave.
So far it's worked every time to get them to just do the goddamn test, take the fucking scan, or do some simple blood work.
Doctors like that are more afraid of malpractice suits than they are of killing a patient over negligence.
The first time it happened was because she had cholecystitis and the doctor was insisting she was too young to have any issues with it, but I was older and had already had my gallbladder removed over it several years before. So I knew the signs, I knew the feeling, and I had doctors from the same hospital ignore my symptoms. Once the demand for notes to be recorded, suddenly everyone is all for doing a simple scan and what do you know, her gallbladder is filled with sludge and stones, neither of which should be there, and it's swelling. A week later it was out, but they wanted to wait 6 months "to wait and see if you're still having discomfort"
To anyone who has never had gallstones, it's like someone is taking a glowing hot knife and stabbing you from just above the stomach toward your spine. It's "discomfort" the way giving birth is "mild pain"
Demand tests and demand records of test denials. Fear of lawsuits and losing licenses goes a lot further than "you're a doctor who is supposed to help people get better" to some.
In my experience, it's either total incompetence of the people in charge, or it's malicious in order to "catch" people doing something bad.
Like a bait car, but way more malicious since the person getting in the metaphorical car doesn't even know it's not their car because the keys worked, and nobody bothers stopping them for a few days so they get extra criminal charges.