Hello Zihan7,
Welcome to the community!
Sorry to hear your account has been suspended. It can happen if the system suspects activity might be fraudulent. Fraudulent behaviour tends to include multiple access attempts to a particular line or account. While it's true that making multiple changes to an account can be for legitimate reasons, they cannot overlook the possibility that nefarious actors may have access to a customer's information.
You would need to re-contact customer service to have them remove the suspension. In addition, they can also be contacted via Live Chat, Facebook, or Twitter. Those methods can be accessed via the contact page posted above. Once in contact with them, they will likely refer you to their Fraud department and/or Verification/Validation team in order to get it sorted. They should be able to provide you with the proper numbers.
Hope this helps 😀
Cheers
