If you have the Public Mobile app installed, Go to the "Account" section at the bottom of the screen.Then click "Transfer phone number" follow the steps after that and you should receive a text from your current provider asking if you are porting ou...
If you are in urgent need to add $ to your account you could consider adding a voucher purchased at one of the following...https://www.publicmobile.ca/en/payment-voucherOnce you're up and running then you can resolve issue with CS.
1. Does your phone connect to data?2. Turn off and restart iMessage and FaceTimeGo to Settings > Messages and turn off iMessage.Go to Settings > FaceTime and turn off FaceTime.Restart your device
Please try the followingReboot the phone and reset the network settingsReseat the sim card. Turn off the phone, remove the sim for a minute before you put it back in and setup Hotspot againCheck APN, go Settings > Cellular > Cellular Data Network > P...