Please seek professional help for a premier ENT unit or Hospital.
A. Having read your questions, the surgery that you underwent first is likely to be a
'Mastiodectomy' (mastectomy is the word used when the breast is removed).
The second surgery on the nose is likely to be a rhinoplasty.
B.There are a wide number of causes for discharge from the ear after this procedure, and this can persist for even 3-5 years after surgery. Very few drops should be accepted practically.
C.Given that you have diabetes mellitus, the basic concern would be whether there is any recurrent focus of infection occurring in your case.
D.Given the two surgeries in the past with complete hearing loss, I would suggest that you have a specialist opinion with a good ENT surgeon at a higher or referral center.
E.Often the good experienced doctors are there in both private and Government sector. It would be worthwhile trying to get a thorough check-up done at the Department of ENT surgery in a busy/reputed teaching medical college. I say this because these centers would get a number of complex cases or failed treatment cases and would be involved in specific focused treatment programs.
Some suggestions would be to seek an appointment with the
Head of the Department of ENT, Tirunelveli Medical College (http://tvmc.ac.in/rhino-laryngology/).
JIPMER, Pondicherry is a well known unit, http://www.jipmer.puducherry.gov.in/department/ent/faculty-and-staff
Coimbatore has good hospitals, http://www.vikramenthospital.com/doctors/dr-pg-visvanathan.php
F. The simple things to be done are to aviod water entry into the ears, ear picking and use of traditional oil into the ears etc.