Reliance Digital — Cashback not received for Reliance digital app online purchase

Address:

Reliance Digital

I purchased an HP laptop from Reliance Digital online app and I self-picked it up front the Reliance Digital store located in Vijayanagar, Bangaloreon 27th September 2020. At the time of payment it was assured that if I make payment with ICICI bank debit/credit card, I will receive 5% cashback on the total value of payment after 90days from date of purchase within 31st December 2020. We paid with ICICI bank debit card and still I haven't received my cashback. I contacted customer support on 6th January 2020 and they told will escalate the query and I will receive my cashback within 2-3 business days. After that I have not got any response from them.

Here are bill details:
Product: HP Pavilion Gaming laptop
Price: Rs 55, 999/-
Order number: RDF06585149
Date: 27/09/2020