https://secure.cic.gc.ca/enquiries-renseignements/case-cas-eng.aspx?mission=london
A case specific enquiry should be used when you believe there are significant delays in your application. For example, a cluster of people behind you have had their COPR granted and you have not had any correspondence for re-med request, additional docs or change in status on ECAS. There is no cost for this service.
Do NOT ask for a status update.
Do NOT ask for acknowledgement that they have received parcel/package.