I actually have something great for you. I went through a similar experience as yours... Antibiotics will not vanish acne, in the long-run it could be damaging due to the fact if say you truly needed Antibiotics in the future for an emergency related situation, they won't work anymore because the body has gotten used to it so there will be no effect.
I've tried all the topical treatments you can name (non prescription & prescription) and I've also tried antibiotics & some prescribed pills by my dermatologist and last but not least I was prescribed Roaccutane (which was great but as soon as you stop it, you're back to where you first began).
I started browsing online for natural solutions & treatments, and came across this
*Moderator edit - URL removed. Read the board rules* & let me tell you, it has done wonders! I actually regret taking Roaccutane and wish I took this a long time ago.
I hope this helped and I wish you the best of luck!