Mivi — Left bud is dead

Address:	Seminole Electronics Pvt Ltd. 1st Floor, Plot No 29, Road No 76, Jubilee Hills, Telangana, Hyderabad 500033
Website:	Flipkart.com

So my warranty period us going to end on 13 oct but in the last week of september my mivi duopods f30 left bud bettery problem arises, so i contact with mivi and they picked the product from my doorsteps. After 15 to 20 days they sent my duopods . But when i recieved i see that my left duopod is dead, it shows no response. So now my warranty period is also over, they are not going to help me. My duopods and money both goes worthless. What should i do? Right bud is working fine but without left bud it is of no use. Please help me