@Ghosted As already mentioned there was an AT&T outage the other day and it also affected other US carriers. But if not that, what phone do you have, is it VoLTE capable/enabled? If not the phone will have voice call problems because the USA no longer has any 3G for a non-VoLTE phone to fall back to. A non VoLTE phone can still connect to T-Mobile's 2G network where available but that will be shut down in a month's time. If not a lack of VoLTE then connect to 4G/LTE instead of 5G because AT&T's 5G has issues. Or try T-Mobile instead. Those are the only two US carriers that partner with Public Mobile.
If you want to inform Public Mobile of your issue you will need to contact customer service using this link
https://productioncommunity.publicmobile.ca/t5/notes/composepage/note-to-user-id/22437
An agent will reply at the envelope icon top right or tap your avatar for Messages if no envelope.
The problem is most likely a phone or settings issue but hard to troubleshoot unless you are still in the USA.
