EBS — extra amount taken from customer while making payment for online purchase

The issue is related to the payment made by our customer from usa on
25/02/2019 for online purchase from our company website.

The payment was for $165 and we have received the equivalent amount for
It i. E rs. 11714.17, but the customer has been charged $174.54.

So now the customer wants to know why they were charged extra of around $10.