IDK if you joking but if not
же is not "he", it's more like "zhe" or "dze" or "je"
"he" will be хе
Why you wouldn't have written it before, on the appointment?
Что вовремя не писали, на приёме? Why you didn't write it before, on the appointment?
Большое спасибо, ваша помощь мне очень нужна и она бесценна.
"ты" can only be used if you are talking to one person (and usually you know who exactly)