Century link is the worst.
I feel your pain, I have been subjected to century link service for going on 3 years now. I begged and pleaded with suddenlink even offered to pay for the work and material to run the cable out to my house here. I had set up 6Mbps with Century link a while ago only to find out I had been paying for the increase but not getting it. Turns out they decided not to allow me to get 6Mbps and not inform me of their decision. I paid for the 6Mbps for probably 8 months before I finally did some digging.
Suddenlink is giving me some BS story about the amount of homes where I live. They stated that they need at least 18 homes per square mile before they can run the line out this way.