✔ 最佳答案
Dear Mr/Ms (surname),
This is (your name) from (your company). Attached please find the monthly mobile phone bill for your perusal.
If you need further assistance, please feel free to contact me at any time.
Thanks a lot!
Sincerely yours,
(your name)
(your job title)
(your company)
2007-06-21 12:03:48 補充:
It should be "Sincerely Yours" at the end.