Hi PaisaPay Team
You have admitted you have a known unfixable bug regarding HDFC bank online transfer.
So I request you, no, implore you to inform buyer before they make the payment regarding the prossesing time for HDFC online transfers.
This way the buyer can make an informed decission to go for HDFC online payments or other mode. And if they do still decide to pay by HDFC online transfer they know and will wait for 2-3 business day for your to process their payments.
Today this is causing a lot of confusion and frustration for buyer and a lot of extra work for sellers expalining each and every buyer of the same.
Since PaisaPay is an exlusive eBay.in product, I hope you can implement this suggestion immediately without bureaucratic delays.