@genyab -- it seems that you can try.
Using the Shaw Chat online web-interface, you immediately are prompted for your personal information:
Provide your information to help our team of specialists identify you faster. Your details will be shared securely
First and Last Name:
Email Address:
Phone number:
Account Holder Name:
Service Address:
Postal Code:
PIN/Passphrase:
That should be enough information for the Specialist Agent to access your account, and then make the changes.
However, since my two-year Value Plan was expiring, I used my telephone to sign-up for a new V.P.
So, YMMV
