Doctors unfortunately do that, and make you think there is nothing physically abnormal that is contributing to your issues (they did with me too).
Your next steps should be looking selecting a doctor from this list that I posted earlier in the thread Doctor Lists -- no discussion
Regarding the thick styloids, I would imagine they could perform surgery to make them thinner, or even take them out as much as possible. However, this would need one of the more skilled surgeons as this would be closer to the skull base, as yours are not particularly long.
Hopefully, one of the US based members can point you to the most appropriate surgeon.
I wouldn’t say anyone can be 100% but it is rather likely that it is causing some of your symptoms. Isaiah has seen many CTs of this, and if she says it’s the thickest she has ever seen, then that’s something.
Good luck