Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain loss of hearing after putting ear drops is not due to the ear drops but it is due to perforation in the ear drum..
In case if the infection in ear has led to perforation in ear drum then only antibiotic ear drops will not resolve the problem..
You should consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and otoscopy can help in diagnosis and he can advise you antibiotics to be taken orally like 
Augmentin, anti-inflammatory painkiller like 
Ibuprofen, steroid and antibiotic ear drops,decongestant nasal sprays..
Oral intake of 
steroids can also be advised..
You can also be advised to avoid exposure to very loud sounds..
Avoid swimming to prevent water exposure..
Avoid picking of ear and popping..
In case if still the perforation does not resolve 
Tympanoplasty can be advised..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..