Myntra.com — product not working

Address: pasuparty enclave, dr no :104, Chittoor, Andhra Pradesh, 517501

My order number is[protected]-9433001. I have recieved the product today but the battery is not working at all. I am really very upset and angry about the service provided by myntra. I brought the fossil watch and the battery isn't working at all. How come you can give me such a defected product. It is also not the small amount i have spent on my order. I want you to reply me with a genuine reason and i want you to send me the battery. I also got a message telling the product will be delived on may6th but I recived on may 7th. And also even if i return the order i am not able recieve the full amount and exchange option is not available. What can I do now?