I have the number of the officer who interviewed me because she requested more paperworks by calling on phone before sending out CIT0520 in email. But even then, I wouldn’t call the officer to know the status of my case. I only call IRCC call Center number if they received my additional documents .
I would say give them a couple more weeks and if not, you can try calling IRCC call Center number. But they will most likely say that your application is within 12 month processing period and not to worry.