Did indeed - I'm sure there have been many, but when I worked there, we had a meeting around someone being banned from the store, and was shown his photo and various personas he's used.
Slightly different though, as he was suspected to be buying expensive TVs for big football games and then returning them quoting he simply didn't like the picture.
If the TV is defective, I think you should be able to return it up to 5 times before a shop goes "hey mate, clearly this TV and their manufacturing process isn't right for you - no more buying and returning"
At the end of the day, you don't have the right to buy a TV
You have to admit though, between PC monitors and TVs from low to premium, the quality control is beyond shocking with most.
People on this very forum has complained about the bogus quality on IPS monitors amongst others that are supposed to be top products.
Even that 4k monitor with the fan?
You just need to read the complaints over the years on AVForums and AVSforum from LCD, Plasma, OLED from the people that have spent $2,500 to $15,000 plus. Granted there has been some near to flawless sets out there but it seems to be rare.
A little example of them testing and talking about quirks, bugs and glitches from way back. Quite extensive but people on forums over the years has complained about many issues just like @woppy101 from DSE, banding, banding near black, magenta/red/yellow and green/cyan on 50% to 80% grey, hot spots, panel seperation. The list is truly endless for quality control.
Even to poor colour tracking to bugs in firmware. Floating gamma, vignetting near black, crushed black on some OLED sets that can't be fixed without hindering contrast ratio. You name it. Granted these are old but quality control is still quite poor to this very day.