eBay — Xolo battery x700s

Address:	Indore, Madhya Pradesh, 452001
Website:	www.ebay.in

I have purchased the battery of the xolo phone but, that battery is not giving response, the product is defective . I have informed the ebay to return and refund me the amount they have taken request but they have not taken any action yet. I have called many times regarding this but they just says that they will resolve it and send me the query about the tracking no. Of the courier for getting draft/cheque.
But still nothing happens now, call is neither connecting and nor the option is enable for contacting...
Plz help me . My product information is described as under :-