Conyac で依頼された翻訳結果を公開

I would like to request you to verify the shipping fee carefully.
In our last business, the shipping fee was at 80.60€ for the 23 kg by air.
However, it is at 967.50€ for the 235 kg even it is going to be shipped by the sea.
Why the shipping fee per 1 kg is so expensive though it is being shipped by the sea?

Anyway, please issue a refund for the amount we paid for the meantime because the cargo has not been arrived.
We also have paid the higher shipping fee.
It is your responsibility to make sure the definite delivery of the cargo.
We think that is the business manner.
We will continue having business with you after resolving the issue at this time.

Well, we look forward to hearing the positive response from you.