try not feeding bottle by yourself, i.e.ask your maid / mother / 99 to feed your baby in bottle. And you should not be present.
Also, make sure you have chosen a right treat to your baby. My boy refuses to use avent treat. I've tried NUK (rubber [yellow], very soft)and luckily it works. I heard from other mama that ChuChu are also okay.
My friend's baby refuses all brands, so, it's very hard to feed in bottle.