I hope I can be a bit more practical than the previous answer. Although it is easy to suggest to accept your condition, trust your ENT or take away your stress, those are of course all impractical pieces of advice which do not address the chronic nature of your symptoms and the lack of relief experienced from your repeated visits to various ENT doctors.
There are a variety of reasons why your ears may feel clogged or become clogged.
The most common is a condition called Eustachian tube dysfunction
, the eustachian tube is a channel that connects between the middle ear and the back of your nose. In people who suffer from chronic allergies the inflammatory mucous that drips into the back of the throat, may inflame the eustachian tube causing it to swell and prevent you rom being able to equalize the pressure in the ears. The treatment in this case is with the use of various anti histamine
medications for allergy
, nasal sprays and sometimes even corticosteroid medication (e.g. prednisone
). The tonsils do not cause your ears to become clogged, but perhaps you misunderstood an explanation about the adenoid
tissue. The adenoids are lymphatic tissue similar to the tonsils that are located in the back of your nose in the area where the eustachian tube ends which if enlarged can cause obstruction and clogging of the ears. This is easily ruled out by a special exam called nasopharyngoscopy, where a slender tube like camera device is advanced through the nose to examine the deeper part of the nose where the adenoids may be located.
If I understand correctly, Khatta means sour. Another cause that can inflame the eustachian tube may be acid reflux
from the stomach. When we lie down at night, acid within the stomach may make its way to the back of the throat and nose and cause us to clear our throat frequently, have a mucous type sensation in the throat and cause cogging o the ears, sometimes even some sinus and nasal symptoms. The treatment for that is with modification of your diet (taking away caffeine (thtat includes coffee and tea), spicy food, sour foods, milk and fatty foods (lamb, cheese), tomato, onion, mint, chocolate, citrus (orange, grapefruit etc) and taking a medicatino to reduce the acid production in the stomach like omeprazole
You should discuss all these options with your Ear Nose and Throat doctor the next time you make an appointment.