Try clearing your browser cache, cookies, and history (for all sites containing "publicmobile.ca", at the minimum).
If the site still won't work then try a different browser. There's many, but the most popular ones are Chrome, Firefox, Safari, Internet Explorer, and Opera, in roughly that order.
And if that still won't work the cause might be a network, security, firewall, or user account (mis)configuration. Or some sort of malware. Try accessing the site on a different computer or a different device, preferably from a different location.
Avast Free Antivirus is indeed free (for at least one year), it will clean up all known malwares, it will repair all the common software traps which break web browsers, and it also comes with the simple and gutless but hardened and privacy-protecting "Avast SafeZone Browser". This browser always works, even when critical hypervisor, operating system, browser, and system components have been misconfigured, erased, or corrupted beyond repair - it's nothing fancy but it'll let you (securely) access your emails, accounts, and bills.
