I seem to think that the storing of SMS's on provider servers expires after a few days. I seem to think this is standard.
Public Mobile does send texts for promos and account status. They also, on occasion, send emails more for marketing.
It's quite rare in my experience for any kind of company to send or communicate somehow else when they don't get a reply from one avenue.
This being a prepaid service, and you don't connect your phone to the network very often, then it would be more up to you to keep track of each term renewal. There is a "heads up" text from here when the term is soon to expire. Then more texts after successful renewal if on autopay or sufficient balance. But when the time comes that you re-connect to the network then you'll see that your service is active. If not, then it didn't renew for some reason. The catch here is that you have a 90 day window of opportunity to renew a term if your service did not renew.
Not sure what else you need to know from the provider though. Sometimes promos and gifts are notified through text. Sometimes in email. But those are not required to keep the service going.
