Then there's the way that you suddenly turn invisible at the check-out getting only the briefest of acknowledgements when you ask the sullen operator to stop throwing around the goods you're about to pay for. But the people at the top of my shit-list are the pig ignorant 'personal shoppers' who use their green trollies like armoured crowd-control vehicles as they wield their intimidate bleeping scanners at customers.
And don't get me started on all those two for one scams. I mean, some of the contrived bollocks passed off as savings are enough to make you choke on your horseburger.
Tesco's success is based on market domination. i.e. quantity not quality. They pervade cities and suburbs like Japanese knotweed and people put up with the crap because there is often limited alternative choice.
For me, the company's response to the survey that "millions of people shop at Tesco" confirms my opinion that they don't rate customers highly enough to put even a little bit of effort into their bullshit.