This according to their service terms
Ending your services with Public Mobile Can I cancel my service at any time? Yes. To cancel your service, contact Public Mobile with the date you want the cancellation to be effective. Can I take my number to another provider? Yes, you have the right to take or “port” your number to another Canadian telecommunications company. Can Public Mobile cancel my service? Public Mobile will only suspend or cancel your service if you have not complied with the Service Terms or any other service agreement you have with us (or if Public Mobile reasonably believes that either may occur). Public Mobile may also suspend or cancel your service for any reason, upon thirty days’ notice to you. Upon suspension or cancellation, Public Mobile will have no obligation to maintain any voicemail messages, contact information or other content related to your use of the Service and you agree that all such messages, information and content may be deleted immediately without notice to you.
