Honda 2 Wheelers India — unicorn 150 bs 4. battery issue

Hi all,
I have purchased unicorn 150 6months back in orange honda (Moinabad, ranga reddy, telengana) now my bike battery is not working i have given complaint at show room. They said to recharge your battery and check once i have done but it's not working again went to the show they staff taken my battery and said they will replace it in a week then i said okay and given battery for replace after one week i went to the show room to take my battery back again they said battery not replaced you need wait another week again after week same thing they are saying finally after one month they suggested me to buy new battery replacement will take 3-4months they said very worst service.