Amazon India — Received defective mobile

Address:

Pune, Maharashtra, 411030

Dear sir,
I got delivery of Moto G4 Plus mobile on 7/9/16.
Now i wants refund due to some some technical issues which was not
cleared even by contacting with Moto Care. The Basic issue is,
the account for refund is not getting add in (payment option-manage
your account for refund)
IFSC code is correct, bank details update automatically, but after
entering account number below that then it shows...invalid IFSC code!
There isn't problem of bank or their account as i was enquired there a
and made transaction also after this issue...
So Please Help me for this.

Account Holder: Vaibhav Anil Sarang
E-mail ID: [protected]@gmail.com
Order No.[protected]
mobile number- [protected]

Its a request to take this mail into consideration and
resolve my problem immediately, Because I am too much mentally
harassed repeatedly calling to care for service.
NOTE:- I am trying to contact your customer care number since last two days, but you guys don't even have time to respond to customer and resolve their problem. Please co ordinate with me or let me allow to file legal complaint against you.

Thank You