Quite often tinnitus is caused by age-related hearing loss. Since hearing gets worse as a person gets older, things do not work the way they used to in that area. Then these hearing loss issues can lead to the ringing in the ear. Once you are getting close to sixty, it is a good idea to have your hearing checked regularly.
You are responsible for following the advice given to you by your various physicians. Only you know exactly how you feel, what you experience every day, and how successful the therapies are. It is crucial that you look at yourself as part of your own medical team, and not just a patient. Work with your doctors so that you are sure to get the best possible care.