Nokia battery BP-6m
Battery swelling

I have nokia 6233 mobile, which has a battery BP-6M, the battery has swelled now and the charge doesn't last. Even if you charge the battery fully, the charge doesn't last for long. The battery cover is unable to accomodate the battery and has broken. I am afraid that the battery might burst and cause injury to me and the ones near me. I would like to ask for a battery replacement.