Flipkart — Flipkart pay later usage

Website:

Flipkart.com

I have flipkart pay later limit of ₹20000 and have been using since 3 years. But now whenever i try to purchase anything I can't use pay later option( it shows this payment method is not availble for this order and says it on every product) what is going wrong. Tried to contact their customer care bit he was also not able to help as he was saying non sense thing.
I will provide one random order id of one of my order that will help you to track my account.
Order id-OD[protected]