Hello~It does seem like you have an ear infection, I certainly have not heard of acid reflux causing these issues. If there is anyway you can see a regular MD, I would certainly do so. I am no doctor, but, to me, the ENT physician is the wrong one, not the NP's.
I know this is going to sound bizarre, but, I would also contact a chiropractor. I had a bad ear infection once, it was so severe that the doctor wanted to puncture my ear drum to get fluid out. Well, the chiropractor worked on my neck and ear, and by the next day, it was draining and I had no pain. It is just a thought, but, it might just be what you need as pinched nerves in your neck can cause all kinds of weird problems.