Xiaomi India — not getting refund money back

Address:	Ahmedabad, Gujarat, 380006
Website:	mobile.mi.com/in/?gclid=Cj0KCQjwm9vPBRCQARIsABAIQYcDT1J6zz-xR10eC-ZuRXhVqo6aQNKHyMsO9OMKxySgHB6kqahr

Hello,
I have bought redmi 4 from mi india on 14th sep, 2017 and delivered on 9th sep, 2017. It has a sim card slot issue, so that i request replacement. They pick up the device got replacement of device on 9th oct, 2017. It has a screen defect. Second time i got defective mobile. I complaint for this. They called me and agrees to give me refund. Refund request initialised on 11th oct, 2017 and today is 31st oct, 2017. Still not got the money back in my account.

Required information :
Order id : [protected]
Model no : redmi 4, 32gb + 3gb black

Please help me to get back my refund amount.