HDFC Bank — ipad did not receive cashback.

I bought an ipad on 11th dec 2019 and made the purchase on my hdfc debit card for 29, 000 rs. And was supposed to receive cashback of 3000 rs by 13th april, 120 days after the purchase. Its been a month and still i didnt get any cashback.
Getting ahold of customer care is also a bit on the hard side. The hdfc bank constantly disappoints me. I started moving assets to different bank altogether. If this cashback doesnt come through ill remove my account here.