英文,一封关于与客户的business letter,要求看问题补充.写的好的加分

英文,一封关于与客户的business letter,要求看问题补充.写的好的加分
Wan Yu Tang purchased a cell phone plan from Endless Journey wireless.His first monthly invoice for service totaled $65,which included a $15 roaming charge.Without understanding the meaning of a roaming charge,Mr.Tang deducted that charge and sent a check for $50,his basic service plan cost.He explained that his basic service charge should be only $50 and asked that you reduce the charges to that amount.Write a letter from Endless Journey wireless explaining the additional charge and requesting the $15payment.Write the letter following the direct or indirect plan.Be prepared to justify your choice.Make up additional details as necessary.
Read the case carefully and follow the guide below on how to write the reply letter.
Guide:
1.Use the indirect plan(the best choice because of possible cultural preference for indirect communication)
2.Opening Buffer:Begin the letter by thanking the customer for purchasing his phone service plan with Endless Journey Wireless.Indicate that you received his letter about last month's bill.
3.In the logical explanation and negative message,explain roaming charges and why they occur.These charges are part of the service plan and help keep the basic service price low.
4.Constructive Follow-up:Offer to let him send payment for the amount that he deducted from this month's bill or choose to add it to next month's bill.
5.Close with a personalized,friendly close---maybe something about the convenience of the cell phone and some of the special features it has(like a message mailbox or something you may add or invent

Endless Journey wireless
Of business 911 South Sunshine
Street Atlanta.GA30301-9635
(678)555-9175 Fax (678)555-3456
May 15,2011-5-16
Mr. Wan Yu Tang
2543 Wishpone Circle
Bayport. FL 33512
Dear Mr. Tang:
I am a staff from Endless Journey wireless, nice to talk to you.
Thanks a lot for you to purchase cell phone service plan from our Endless Journey Wireless. It is the most popular service in our nation, and has got good comment from almost all of our customers. I am very glad we could cooperate with you since I have received you last month's bill, thanks for this.
In order to serve our customers considerably, i would like once again to explain the charges. The roaming charges is 15usd. Although it is a part of the entire fee, it is part of the entire service plan. The roaming service is like a gift for the basic service. In other words, because there is roaming service charge , then the basic service price could be low., if not, then the basic service price won't be so low. I hope you could understand my meaning.
Since the roaming charges is an appendix of the basic service, so the roaming charge is necessary. Please send the payment for the amount you deducted from this month's bill or choose to add it to next month's bill.
What you have chosen is really a very convenient service, nowadys, a cell phone is a must, and this service in Endless Journey Wireless is the most convenient service, actually not only the basic charge is very cheap, the roaming charge is also very humanable, which is like a gift, bringing much more convenience for your life. There is a daily message for you as gift, which is something like humurous, weather report and festival greetings etc, so this function is favroable to remind you the festivals, such as Mother's Day, Father's Day etc, to bring a lot of comfort for your parents.
Best regards for you.
XXX
Staffer of Endless Journey wireless