From,
Your Name
Your Location, City
To
The Manager
The Book Store
Location
Ref – Your parcel no. 15 dt. 12th June 09
Sir,
I have the honor to inform you that I received the parcel under reference by yesterday post. But I am sorry to point out that you have sent only two copies of Moral Stories instead of three, though my payment covered the price of three copies. Please send me the copy as soon as possible and oblige.
Yours Faithfully
Your Name