Buzzing in the left ear and sudden hearing loss

I had double ear infections which has now resulted in sudden hearing loss along with a sense of pressure and a constant buzzing sound in my left ear. I tried 3 different antibodies and a round of steroids . The infections went away but I have never regained my hearing and the buzzing is continuously there. I had an MRI but the results showed that everything was fine. My ENT basically told me that there was no explanation for this other than sometimes these things happen. Feeling frustrated and discouraged....