Also keep your ears dry, don't get water in them, use a hair dryer to keep your ears dry after washing. A outer ear infection can spread to the whole ear, if you get a swollen painful ear or rash on your face from your ear problem, go see your doctor , it could be a infection called celluilitis and you need antibiotics for it immediately.
Maybe your immune system is weak and you keep getting infections. If you have a ear infection the pain in your neck could be your lymph nodes swelling up to fight the infection.
I had a very bad ear infection and had pain in my neck and jaw, amoxillin antibiotics have helped, but I am run down all the time. If you smoke stop as it can make ear infections happen, and also damage your circulation, which can cause ear infections. Maybe you should see a doctor about your circulation. And immune system.
The pain in your chest and arm could be anxiety from the problems you're having, plus just being unwell . I am no doctor so don't take my advice as truth, it's just a suggestion. Go get checked out by another docotor if you not having any luck with this.