Four 'Direct Debit Health Checks' in the space of 2 months (their T&C's state they do this 3 monthly) by Ovo Energy, despite our energy usage plummeting as the summer weather gets warmer.
So as suggested by a previous poster, I cancelled my direct debit as it won't let you readjust it downwards after OVO increase it without your agreement. Ovo then email you to request you set the DD back up, which I did - at the amount I want to pay.
Guess I'll be cancelling and setting back up the DD every time they increase it. Works though, a little time consuming but works.