HDFC Bank — hdfc bank-iphone cashback not received

I have bought my iphoneX with hdfc bank debit card on 26/1/2020 in Mumbai. 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.