EustachianTubeDysfunction. In delhi?

I'm suffering from Eustachian Tube Dysfunction. This condition is happening since 2 months - out of which - I was treated for middle ear infection (acute serous otitis media) for 1.5 month. I feel Clicking/Cracking Sound in my left ear only when I swallow or yawn. I also noticed (on swallowing) sometimes fluid comes from the left-back side of my throat - that I had spit every 1- 2 hour approx. Attached – CT Scan of Sinus and prescription of current treatment. Q - Are below two treatments effective? If yes, where can I get it done in delhi? 1. Balloon Dilation of Eustachian Tube - I read National Institute for Health and Clinical Excellence (NICE),UK issued full guideline in this regard. - https://www.nice.org.uk/guidance/ipg409/chapter/2-the-procedure Video- https://youtu.be/gKNc4Sdq-b8 2. Politzerization - This solution I found in earpopper.com which has a device which uses Politzerization method to treat Eustachian Tube Dysfunction. Audiometry Impedance & Hearing are OK