1. Go to this link
https://www.oic-ci.gc.ca/en
2. you will see "submit a complaint" cur card on right side in pink
3. It will ask you 4 questions. What is this complaint regarding ? (Select the first option). For 2nd question Ans : yes. 3rd question : No. 4th Question : No
4. Then go to online complain option .
**Basically the office of information minister will ask IRCC why is the delay and will ask them to release GCMS notes as per policy if the delay is unusual. (its just a slap on the wrist)
**Full disclosure : I have not done this myself. Someone else suggested this to me.