If you are currently able to access your TELUS.com account online, you will be able to change your 4 digit TELUS Account ID/PIN. To do that, please do the following:
1) Click on the following link: https://www.telus.com/youraccount
2) Log in with your Username/Email and password.
3) Under the "Billing" section, click on the number (link) under "Account #".
4) On this page, you will see "Account details". Look for "Account ID/PIN" and beside it, click on the "Change" link.
5) Enter whatever 4 digit you would like.
6) Once you are finished, click on the green "Save" button.
From that point forward, your TELUS Account ID/PIN will be whatever you just selected.