iBall — complaining about not servicing of my headset and need of refund amount

Address:

67,Govt Employee Quarters,, Pongaliyur Road,, Veerakeralam,, Coimbatore-7, Coimbatore, Tamil Nadu, 641007

Respected sir,
We purchased the iball product (Listzomania 5) headset 5 months before sir, after 3 months that headset is not working properly... So i visited nearest authorised service center and requested them to service that headset which is under warranty... That service center makes 3 months to product replacement... Finally i got that product there and checked there itself, unfortunately again that headset is not working on oneside. Suddenly i returned to that service center and asked them to refund my money. They told me to email your respective email i. D... Now i returned that headset in that service center... Almost 4 months gone sir... Please give me a refund amount... And i need a fast and severe action in this issue...