Pls check and revert. When business confirmation was give and that must be on the ground of payment agreement.
I was involved for payment front specially for credit front. I believe this would be secondary issue when business's confirmation was given prior to that.
My intention to help to win this business in case if you would have any challenge to win this business by getting help from local contact at India. seems this wasn't a case any how.
Pls take immediate and appropriate action and make sure such incidence will never happen in future transactions.
Since cargo is very low value extend your full support on commercial aspects and consider the long term healthy business relationship.
Appreciate your immediate action.