@Miffy PM does not give temporary number UNLESS the port request was over a month old
If port request was over a month old, your port request will be voided and PM will randomly assign you a permanent number , you will have to reach out to your old provider and see if the account still active
if port request is less than a month old, your PM sim can make outgoing calls using that number, but incoming still go to your old provider sim. There is a number to call to talk to live support, they can re-trigger the process for you. I will message the number to you via the Community inbox ( https://productioncommunity.publicmobile.ca/t5/notes/privatenotespage ) . Check the envelope icon on top right. Call them and get it fixed
