Here’s what consumers have asked with answers from CenturyLink staff and previous consumers.
Don't pay your bill. Centurylink has the worst customer service on the planet. The best way to cancel anything with them is to cancel the payment. Don't give them a dime and eventually they will get the message.
Don't bother with either. Centurylink has the worst routers on the planet. Literally designed to fail. No matter what router you get from them, it won't last more than 6 months. If you are stuck with Centurylink and need a good router, go to Best Buy and ask them for a Netgear router. They can help you set it up.