Hi Ziyu,You just need to say that your application exceeds the process time. And you also can sent a email by Web form to inform them. An agent will reply you in 10 business day. I think that agent has the higher position than someone who answer your calling. Meanwhile, in this forum, I saw another way that maybe helps. It is to find your local parliament member in order to ask a help. They can contact CIC in some way. After all, it is better to let them know your situation.
Thanks you for your response and advice. As you recommended, I sent them an online inquiry.
Have a wonderful day,