How do I change my cell phone number that's associated with my account? Bitbuy.ca Support April 30, 2018 16:53 Updated Follow If you would like to change your phone number associated with your account, please call our office at 1 888 770 2646 or email [email protected]. This can only be done by a member of the Bitbuy staff. Related articles What is Two-Factor Authorization? Comments 0 comments Please sign in to leave a comment.