I had internet service with Centurylink for almost 20-years. I paid for 7MB, but hardly ever received more than 3mb-5mb, and half the time it was <1Mb. Yeah, super slow.
When Starlink came to my area in 2023 I took the opportunity to get rid of Centurylink for this 20-years of bad service. I cancelled my account end of April per Centurylink online instructions, and they still screwed it up and continued to bill me after my cancellation.
If you have ANY option other than Centurylink for internet service go to that first or you'll be sorry. Centurylink is a terrible company and I predict will be bankrupt soon.