Ear ringing and white substance inside.

Hello Doctors From last two months i am suffering from ear problems. Initially there was some pain .I consulted ENT..he prescribed some antibiotics and clean the ear as wax was there...Next after few days again I was having pain...then again I went than he cleaned the ear again and did endoscopy of the ear which was normal..He prescribed again antibiotics.. Still ear was blockked and some sounds was coming from ear..Than i consulted another ENT...he told me it's fungal infection and gave me candid ear drops 3 times a day for 7 days.. Still my ear problem is not solved..Still ear is blocked..and some sorts of mild sound I used to get in ear...Today my wife checked my ear canal by torch...She told me some white substance is still there.. Please guide me ,i am very much worried. Repeatedly I am also suffering from cold.. Maximum time i spend in AC also...