HTC India — Htc desire 828 dual sim/ htc worst service

Address:

Bangalore, Karnataka, 50098

Its not more than 8 months i bought this mobile and from that time i am runing to your service centres only.
Its getting off again and again.i want want my moblie to be replace or otherwise refund my money back.its a worst service you are providing to customers.i got my mobile repaired from your service centre but within seven days it came back to same condition.should i leave this handset at your service centre only.or should i run again and again.i jus wants my handset to be relaced now i dont wat it to be repaired anymore mind it.and do it as early as possible.i wont buy any of your products here after if you repeat the same **** things with customers.refund my money or else replace my mobile as early as possible.