Xiaomi India — Stone delivered instead of phone

Website:

mi.com

Ordered phone redmi 3s gold 16g from offical mi.com site and was a prepaid order worth rs. 6999 as gift to my parents in lucknow. The exterior packing was not tampered so the packet was accepted by us. when phone box was opened instead of phone, stone was found with charger as in attached picture.The product is delivered but no return option has come on the site and mailed them but till now no contact from them. I have past transaction with mi.com in which i ordered phone worth 23000 and mi band worth 2000 and were successful because they were cash on delivery and this time prepaid and they cheated on us. sir/madam kindly look into this case.
order id-[protected]
mmi user account id-[protected]