Not to discount @ST0RM ’s experience with CyberPower (which sounds frustrating)…back in late November I had ordered two of their PCs for the boys with 3000 series cards (can’t remember now what is in them) and they came on time, with great cable routing and a pretty clean build. They have been running just fine since Christmas. That might have been just at the beginning of the 30XX card crunch…so maybe they had a good inventory at that point.
Sorry to hear you are getting a run around…with so many people having turned inward over the past year it is not surprising that parts are off the market. Like @chipwich said…getting bicycle components has been tough for 6 months…and the used market is pretty bare bones too.