You need to do more than just buy the prepaid cards. Since you didn't provide any information I'll cover everything.
Did you use the card to top up your account? You can do that 3 different ways:
1) Online Account
2) Mobile App via WiFi
3) Call TELUS on your prepaid phone using #123
Your phone must also be from TELUS or unlocked if not from TELUS.
You must have TELUS SIM card.
The SIM card must be activated on TELUS
You must be in area covered by the TELUS network.
Have you called TELUS to get help? *611 on your TELUS mobile phone or 1-866-558-2273
