Welcome to the site. I have no experience with the procedure but Brutus has a pretty bad ear infection about a month or so ago. We used PhytoVet CK Antiseptic Flush 2x a day and Mometamax liquid antibiotic inserted in ear no oral meds. Im not sure what meds you have tried? Can you post some pics
I would try getting a second opinion before having the surgery done. What area are you in? There may be a vet on the Vet Recomendation Page.