There not issue what you paid to DHL in baht, concerns is that as we are also having account with DHL and charges pay by AEPL to DHL if found less then paid by Kohbyo then,
it is not necessary to bear higher cost which paid by Kohbyo. It can be negotiable/payable as per terms mentioned on PO.
Before reach any conclusion we would like to know who finalized to said cost paid by Kohbyo on behalf of AEPL even though AEPL is having account with DHL and freight condition of PO is due.
Requested support in this matter to reach on proper conclusion