Broken supermarket zombie staff

Have you seen this advert for (English supermarket) Somerfield? The whole setup's quite annoying, but the worst bit is the slo-mo scanning scene about halfway through. 

It makes it look like the scanners on their cash tills are in-cre-di-bly slooooooooooooow:

Also, their tills are apparently staffed by monged out zombies who move at sub-glacial pace.

Not something I'd shout about if I were them.