some years ago, I once returned a faulty computer to a shop in London.

I got a full refund without hassle, but the next time I went in the shop I was told “I had been banned because I had caused “problems” before.

The bloke in there was actually getting ready to dial 999!

Now I am not a big intimidating sort of chap and I had been polite when returning the faulty computer so I was more amazed by this than anything – but it just shows how unwilling many businesses are to deal with difficult customers, they would rather lose all the repeat business than sort out their problems.