I see that you have replied
but unfortunately we did not receive your revised email.
For this one, we will accept the amendment and try to explain to the customer. However in the future, for any amendment, you must confirm we have received your amendment, if we do not confirm and you do not follow up, we will not be able to accept the amended charges. Please understand that we are not penalizing you but just need to ensure we are charging correctly as well as you are charging correctly to us. Your acknowledgement on this issue is needed. Thanks…