Something strange is going on from CIC side..
I don't have any representative but I got below email in last 2 days (2 times)
Dear ****,
This is in reference to your application for permanent residence in Canada. It appears that you have a Representative for your application. If you would like to use a Representative for your application, please provide us the following document:
Ø Use of Representative IMM5476: A signed and completed Use of a Representative form (IMM5476). To learn more about individuals who can represent you, visit our website at http://www.cic.gc.ca/english/information/representative/index.asp. Submit this form This must be received at this office by: 2016/03/23
You must send us the requested information by email within 30 days from the date of this letter.
Please reply directly to this email and put your application number in the title.