please correct a sentence, please

[Zoe2008]

We haven't proceed the document upon your confirmation. Because we did not know whether you will accept the bill amount or not.

[Route21]

Hi Zoe

As an NES, but not a teacher, I would have said:

Unfortunately we can't currently proceed with the document(/order) as we don't yet have confirmation that you accept the invoiced amount.

Hope this helps

R21
(xNT)