HDFC Bank — Redeeming Reward points

I have accumulated Reward Points of more than ₹5000. I was told that I can convert into cash during the billing cycle payment. I see one option to redeem as cash where it lets me choose only ₹5000 and that it can be redeemed only in next statement. But I need to convert more than ₹5000 + I want it for paying the outstanding balance. I have come out of country on a vacation and not able to reach the customer care. I might have to close the card if I am not provided any quick solution for the same. My payment due is in 1 day. Request you to respond at the earliest