The block can only be removed by the billing department and the agent has to contact the billing department while you are on the phone. Many agents don't know how to do that so insist on getting a call back from a manager if they tell you they cannot contact the billing department.
The billing department is in the Mountain time zone and open from 9:00 AM - 4:00 PM Mountain time. You need to call during those times on Monday through Friday. Once they get to the right department it is a quick fix.
