Just an FYI, CIC are warning about scam calls supposedly coming from them. Don't give out your personal info over the phone and don't make payments over the phone.
http://www.cic.gc.ca/english/department/media/notices/2015-06-30.asp?utm_source=owly-eng&utm_medum=facebook-citcanada&utm_campaign=generic
http://www.cic.gc.ca/english/department/media/notices/2015-06-30.asp?utm_source=owly-eng&utm_medum=facebook-citcanada&utm_campaign=generic