With optimum therapy, the “ringing and deafness” should subside fairly quickly, with an uncomplicated middle ear infection. However, complications including permanent damage to the ear drum and/or adjacent structures can occur, when the infection is uncontrolled or only partially controlled, leading to scarring. Another complication of middle ear infections is infection of the mastoid, a structure that lies behind the ear, much more common in children than adults.
Your doctor has treated in exactly the right way and in most instances, all your symptoms would have resolved. But, since they have not, it would be wise to request consultation with an ear, nose and throat (ENT) specialist, preferably one with a special interest in the ear. By doing this your concerns will be addressed and hopefully, relieved and possibly permanent hearing loss avoided. And, if your doctor is like most doctors, his feelings will not be hurt by your request.
Good luck.