As new to upwork, do should be done when beginning is bad?

[microsharif700]

I am new to upwork. Just completed almost 500 hours. I have just started to work on a new project and I was working good. Client has no issue with my skills and work. They have invited me in trello and assigned a new task for me in Italian. At that time I thought that person is my coworker, later I have found he is the main client. I have just commented that "I do not know Italian, and I have not studied Italian language in my any classses". For this comment client ended my contact and threads me with very sharp arrogance. In that case what should I do?