Even in Hawaii, where many Japanese live, you must have an experience or two, where you received an expensive invoice for an unsatisfying service after a long wait.
I had nerve-wracking medical emergency issues twice recently, and every time I had concerns or inquiries, I needed to ask doctors many questions until I fully comprehended the situation. Though I thought I must have been an annoying patient for them, one of them told me “I used to not be fond of Japanese patients because they would say bad things behind my back without asking me any questions beforehand. It’s great that you let me know your concerns and inquiries up front so that I can address any issues you may have – Thank you.”
Even if you are not good at speaking English, you should be brave enough to speak up.