Zomato — no credits as promised

My order id [protected]. I applied promo code diwali for this order and i didn't receive cash back o[censored]p to 70% after 40%.
[protected], this is order id of me on saturday from same restaurant, from same account, for same item for which i applied same code diwali n got credits back against the order [protected] from same restaurant, from same account, for same item for which i applied same code diwali which was applied successfully n got 40% but didn't get 20% credits. I think this explanation is enough. If you have doubt check these both order ids n give me credits what you promised. No response till now even after multiple mails, such an unethical company