I think you need to call the Vancouver CIC.You are already left behind. I saw this contact number posted by Wilson before. He also said to call in the morning probably at 8am 1 888 242 2100. Press 1-1-0
In Vancouver? I guess not. I received my DM letter on March 12 and only last week I received my landing interview which will be on Saturday May 27. It took almost 2 months before I received my landing interview.
I think you need to accept the situation. It already done and you cant undo it anymore. On the bright side, you said that cic will reschedule your landing interview in June. Cheer up! And prepare yourself on that day of your interview.