Did you follow exact porting number procedure?
You can port your number in from through your self serve account. Go to the Change Number feature on your overview page. Choose to port (transfer) your phone number and check the authorization box and enter required information.
Keep your Old SIM card in your phone and reply YES to the PAT (porting authorization text) within 90 minutes of receiving it. You can then place the PM SIM back in your phone and your port will complete within a few minutes to a maximum of 2 hours. Once incoming calls work on your PM SIM and your Old SIM ceases functioning your Old account (should) will be closed and your port completed. Just in case, before initiation port, remove all billing data from your Old account to avoid accidental charges by Old provider.
If you missed the PAT (porting authorization text) SMS from previous carrier, then can call the Telus/PM porting number which I'll send you via private message (check your community inbox) and they will be able to request another authorization SMS to be sent so it's important to keep the old SIM in his phone in order to respond with a Yes to that SMS.