Ear infection. Already met many doctors.

Repeated question I have ear infection pain and buzzing sound I took many antibiotics and met many ent specialist. Not cured. But when I took augmentin 625 for two days And each time I took augmentin within few minutes felt something discharge  in both ear like water. And feeling got cured so I stopped augmentin. But later again increased buzzing sound and pain. And again I took augmentin 625 but this time not worked. Maybe became resistance Done blood test CBC showing wbc count increased And done blood culture showing no bacteria. I don't have any problem besides ear pain and uncomfortable in throat. How to know which medicine resistance and susceptible is there any test I already met many doctors.