I had more than a few strange readings on Forest Hill station and 6 pounds charges, top up working and not. Whenever I called the number on back of the oyster it was corrected, so was never out of pocket. It was always one call to resolve an issue.

Ever since a guard showed me to keep the oyster still while it is being read I've had no problems. I wish I was told that earlier as my problems were all user related. I also have an auto top up set up. It works great and I never have to worry about topping up. I can also see all my journeys and charges online.