Whirlpool India — Duplicate Bill required for my order placed online in year 2018

I am in need of duplicate bill for my purchase made on September 20th, 2018.

Have already provided the transaction details in terms of bank transaction id, transaction date, transaction amount, delivery address etc but whirlpool is not able to trace any order details. Have shared concern over [protected]@whirlpool.com multiple times but no resolution yet. Requesting immediate assistance.