Got 2 bills, one saying was in credit £200+, the other £157 owing. Took a phone call and a posted message to sort out, in the meantime still got an overdue reminder. Set up direct debit online - programming is rubbish - even though I have submitted an actual reading 10 days ago it wanted another. You have to put the date of the readings in twice! If you don't use actual readings, the estimated usage monthly payment was way more than needed.
Tip is always submit actual readings even if the site experience is not as slick as it could be.
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