[Resolved]  HDFC Bank — cashback not received on ifb washing machine bought using hdfc bank credit card

I had purchased a washing machine in the months of October 2019. I made the payment through my HDFC Bank credit card as there was an offer of 10% (about 3000/- ) cashback to be sent back to my credit card within 90 days from purchase which I haven't received till date. I contacted HDFC Bank customer care and they said its 90 working days* ( *which means excluding Saturdays and Sundays) but now it's been more than 180 days and I am still waiting for my cashback. Now I am not able to get in touch with customer care executives as well. It's been really frustrating. I am cursing myself to have used HDFC banks services now. I have been on my toes to get this cashback but its of no use. Cashback offers from HDFC bank seems like a marketing gimmick to trap customers into using their services only to deceive them in the end. I have been hdfc bank account holder for a long time but had never used their credit card services in past. This first time experience itself has been a bitter one. I am thinking of even closing down my account with them.