Dear ___________,
I am truly sorry that the package of the choclate---300 pounds which we dilivered to you has been broken. and we promise to resend the goods to you as soon as possible. plesse let the broken packed choclate back to us with the driver who we send goods.
We promise that kind of thing would not happened again .Hope we can still cooperate happily.
Yours sincerely
(人命）