我是xx部門員工,你的信我們己經收到了,我上司亦看過,他的結論為:你的要求已超越我們的工作範圍,所以我們幫不到你.
I am a staff of XX, my department received your letter last friday ,my supervisor have read your letter,but my supervisor mean is your matter is over our department 的工作範圍,so we can not help you.
(請指出我的錯處,不用留情,因為我知道我這幾句寫得好差)
(不要太書信形式,簡簡單單就可以了)