How many times have I used self serve checkouts & received change? Lots and change has been fine. Today I used one in stresscos put in £20 note, was due £9.40 change, but automated machine gave me £7.60! Had to wait for someone to help. Thought she wasn't going to believe me. She was surprised & I could see the cogs turning - was I lying? However, she gave me my correct change. No apology though. So ladies always check your change, even from self serve ones.