帮忙给学校发一封英文邮件内容如下：我已经收到6周语言班offer了！但考虑到办理签证的问题想直接考出一个合格的语言成绩我打算考PTE。因此考虑到我已经支付了语言班学费想询问一下语言班退费的要求以及最晚的退费时间。

Dear [School Administration],

I am writing to inquire about the refund policy for the 6-week language course that I have enrolled in and paid for. Although I have received the offer for the course, I have decided to take the PTE exam to obtain a qualified language score due to visa processing concerns.

Considering this change of plan, I would appreciate it if you could provide me with information on the requirements for a refund of the language course fees and the latest possible refund date.

Thank you for your assistance in this matter.

Sincerely,

[Your Name