Skyshopdeals.com — steam mop is not working (defective)

I bought a easy x5 steam mop from skyshopdeals, it is delivered to me on 01/03/2019. Order no. Hs15592. Delivered to bhopal (Mp). The payment is done via cod. The mop is defective not working at all. I want to return the item as early as possible. I called customer care many times but they are not attending the calls, this is not expected from any company. Do the needful at the earliest.