Are you calling the number I gave you? The number for Canada Border Services Agency is 1-888-502-9060, and it's a 24-hour line...so you can call any time, day or night. Call there first to report the immigration fraud. Give them as much information as you possibly can.
Then, call CIC at 1-888-242‑2100. Their call center is only open from 8:00 a.m. to 4:00 p.m, so the best thing to do is start dialing at 7:45 in the morning, and catch someone before the lines get tied up. As soon as someone answers, give them your name and client number, and tell them you just got off the phone with CBSA after reporting immigration fraud on your case, and you need to verify that your file has been updated with a cancellation request that you submitted by e-mail a few days ago.
If - and only if - you can't reach somebody at the 888-242 number by tomorrow, let me know and I'll give you a direct line to someone in Ottawa.
Your online status might not be updated immediately. And you'll only know if his PR has been approved once they send you a confirmation letter (either by e-mail or mail).