Hi @laura0824,
Welcome to the Community 
You would need to contact the customer service to request the suspension of your service. If you're not the Account Holder, you would need to ask them to proceed to the request.
Only cellphone lines without an agreement are eligible for a temporary suspension. It will be effective on the next billing cycle, it cannot be added mid-cycle!
The cost is $7 + tx per month, per line suspended
Hope that answers your questions!
