My application is 4 days overdue, I sent mail to Ottawa and got response as below
"Good day
Please be informed that your application is currently in queue for review by an officer. Unfortunately, we are not able to provide you with a date on which your file will be reviewed.
Please be assured that you will be contacted immediately should further information be required or regarding the next steps in your file.
We thank you for your patience and for keeping your correspondence to a minimum.
Regards,