thanks for your query
You have presbyacusis with tinnitus
Your Hearing aid
need modifications for tinnitus masking for that annoying sound you hear.
Also take Ginseng
or Ginko biloba Like tab Cognix Plus.
It is much difficult to treat, needs some behavioural modifications like try to divert your mind whenever you feel sound and indulge yourself in some work when you listen swisshing sound.