HDFC Bank — IPhone 11 cashback!

I have bought my iphone 11 with hdfc bank debit card on 13/02/2020 from reliance digital, habitat mall, mysore, karnatka. As mentioned by hdfc bank (To receive cashback of rupees 6000 within 90 days from the transactional month end). I haven’t received my cashback till now, it is more than 90 days. I have asked in reliance digital, they said to check with bank. Hope this issue gets resolved and cashback will be credited as soon as possible.