I'm on smart meters and have been with EDF just over 4 years.
Like all suppliers they adjust direct debits to keep the account in credit, looking back it's varies between £17 and £560 in the last couple of years (they changed to Octopus's Kraken accounts system, so no older history on line).
They've just emailed to say "we're increasing your payments from £130.19 to £225.21 starting 5 February"
WTAF?