Very good post Simmy, thanks for sharing..
Well I would like to draw you folk's attention to the point:
page no.6-->Asking for payment(Supplier)-->Second or third reminder(open)-->last paragraph:
"I wish to draw your attention to my previous emails of (dates) about the
overdue payment on your account. We are very concerned that the
matter has not yet "receive" your attention."
According to me the highlighted word should be 'received' instead of 'receive'.
Clarification: According the grammar rules, has/have/had must follow past participle form of the verb(V.P.P.).
Its a great effort by you Simmy, I just thought of describing what I felt.