HDFC Bank — cash back not received on iphone 11 after 120 days

Address: #27 4th Cross Muneshwara Layout , Attur Yelahanka New Town

Hello team,

I had purchased iphone 11 on 21 february 2020 at croma store on my debit card emi billing 69000 thousand
My debit card number : [protected]
My name rahul k s
Ph [protected]
My account number [protected]

I was promised to get a cashback of 6000/ rupees after 120 days its more than 130 days now i still haven't received my cashback as promised by hdfc bank i have check my statement too. Kindly please revert me back or call me and let me know why is there a delay in my cashback and let me know when it will be credited as i need this asap please escalate i am not able to contact any customer service due to corona issue call is not getting connected and bank people has suggested to mail you please respond this mail with priority...

Thanks,
Rahul