假如你是卜曼宜，你购买了一部某外国公司生产的手机，因有质量问题，要求该公司更换。请根据下列要点，用英文写一封电子邮件。
要点：
1. 问题：手机不响铃，不能发短信;该产品已售完，无法更换;型号新，无配件，无法维修。
2. 要求：公司应尽快予以更换。
注意：1. 词数为100左右;
2. 参考词汇：配件—— pare part;
3. 电子邮件的开头和结尾已为你写好(不计入你所写词数);
4.已给出的电子邮件的开头和结尾不得抄入答题卡。
Dear Sir，
I am writing to you for the mobile phone of Dephone-S250 I bought on 20th Apr.2008 at Tele Mall in Wuhan, P.R. China. Ten day after that, it didn’t ring and end hort meage. Then I took it to the eller, but wa told that the model had been old out and I had to wait at leat three month for a new one. I had no choice but to go to the repairman. To my diappointment ,he aid ince it wa a new model in China, it wa impoible to fix it without the right pare part. I wa o deperate on hearing that for I can not wait that long. Therefore, I have to require that you end me a new one of the ame model within a month.
Thank you for your conideration.
Sincerely your,
Bu Manyi[由www.haoZuowen.Com整理]