HDFC Bank — iphone 11 - cashback not received

I had bought an iphone11 with hdfc bank debit card on 10/12/2019 from imagine store, orion mall, bangalore. As mentioned by hdfc bank (To receive cashback of 6000 within 120 days from the transactional month end) i haven’t received my cashback till now, it is more than 120 days. Hope this issue gets resolved and cashback will be credited as soon as possible.

Invoice number: imosl1117219