Octopus energy got my tariffs the wrong way, first charging me £520. This was after phoning them previously to swap them round. I rung again and was put through to a very helpful lady called Tate. She sent a test through to check which meter is which & promised this will be fixed. She also sent me an email after to follow up. A very friendly voice and explained everything throughly. When calling to see of octopus had received the new readings I was put through to Molly who helped fix my bill with the correct tariffs and change it their end. She was exceptional and quick! As I’m on economy 7 with storage heaters my bill is around £300 a month, so it’s expensive even if I switched to a different company. However octopus is easy to get through too & the phone handlers are very polite.