[Misericordias]

Hello, it's been a long time since I asked a question, but recent events that have transpired has given me new questions to ask!

My question is about assertiveness. How assertive must I be in Japan in order for things to get done in a timely fashion? For example, my school is lagging a bit in terms of granting me my certificate of eligibility so I can apply for a student visa and dormitory processes, so I have been sending e-mails on a weekly basis asking about the status of the CoE. However, the person does not respond in a timely fashion (if at all) which forces me to ask other people the exact same question. Am I being too forceful with my inquiries which is results in what I feel to be a cold shoulder or must I be even more forceful with my inquiries? Also in general, how assertive should I be with thing that I need to get done in Japan? Are people generally good with getting things done in a timely manner in Japan, or will I have to resort to nagging to get things done?

Also, how would I know if I am being too assertive with my requests? What are some of the body or hidden languages must I read into to see if I'm being too assertive?

Thank you in advance with answering my questions!