Daikin Air Conditioners / Daikinindia.com — Merchant cashback not received

I purchased Daikin Split AC from Vijay Sales Mumbai on 20th Feb'22 on credit card cashback offer with month EMI.

I was advised by Vijay Sales that Merchant Cashback will be credited to your account in 90 days, hence, I had opted for this offer.

Currently, 6 month EMI tenure is over but still have not received any cashback.
Can you please check on this discrepancy ?
Let me know which details are required further to investigate here ?

I can furnish below details related to Daikin AC.

Item name - Daikin O/DR UNIT RKL71UV 4STAR INV HSN CODE 84151010
DAIKIN AC FTKL71UV 4 STAR INV 2.02 TN SPL