I agree Osc, it's quite dire.... i was in the shop the other day and the total was £12.10 so I handed over a £20 note which the girl entered into the till. I then found I had £2.10 in coins so gave her those as well; simple maths you'd think right? Well no - she had to think for a few minutes and then asked me to confirm that I should be getting a £10 note back now instead of the £7.90 as per the till instructions
So yes I despair with you