I had been with Atlantic/SSE for over 20 years and have had nothing but problems with OVO. Firstly, without asking, they changed my billing from 3-monthly on receipt of bill to monthly, secondly, I used to pay at the Post Office but they have stopped that, which is very inconvenient. They added my last SSE bill for December 2022 to the December-January one, I rang on 25 January and an agent finally said she would send a revised bill but I've never received that. Emails have been ignored. I had to ring again today and ask for the bill, since my next bill will be due in a couple of days. The agent (had the cheek) to read out a statement saying that a credit company will be notified if my bill is not paid! Dreadful Company.