Well DAYum, CenturyLink finally got their asses in gear and did a manual speed qualification test on my line, and the gal in accounts that verified the tech dept did that wrote up an order to send me a free pair bonded 20Mb speed rated modem for the hassle I've been through for years of them insisting I only qualify for 12Mb.
The problem as I see it is their Loop Qualification System does not retain results of manual speed qualification checks. It kept reverting back to saying my line could only handle 12Mb. I'd also been fed a bunch of BS over the years that 20Mb speed requires fiber optic lines in your building, but apparently that's false too.
I can only hope now nothing disrupts this order, because I really don't want to go through this again. It's not like 20 down and 2 up is all that great for $40 anyway. Needless to say some people at CenturyLink have more attitude than knowledge.
The funny thing is had they done this years ago they'd have made more money off me. Instead they pick a time when anything up to 20Mb is same price, so now they're not making any more because of it. Can't say I feel sorry for them though.