We are surprised that you have taken no notice of our two previous applications for a settlement of our account of $3000, which is now much overdue, our terms being 30 days from the date of invoice.

• 贵方对于本公司前两次申请付清3000美元帐款，未予注意，使我方大为惊讶。以从发票日起30天付款的条件，该笔款项现已过期已久。