I didn't ask for this money to be paid back.

[ItsFridayIminLoveJS]

I'm with Eon next and pay a set amount every four weeks £150.. l am a pensioner.
Three weeks ago l had just over a thousand pounds unexpected paid into my bank account.. it turns out it was a refund from Eon next because l was over a thousand pounds in credit. I pay the same all year round so l can have my heating/ tumble dryer etc on anytime l want .( l dont hang my clothes out... disabled). I paid it all back into my account .. but last Monday it was paid back into my bank. I rang Eon next and explained l wanted it to stay in my Eon account.. they said yes that's fine.. Friday it was back in my bank.
I suppose l can keep it there and pay any extra l use.. but why do they do this without my permission?

I am also with E-On for electricity. I don’t think they like having above a certain amount sitting in credit. I like to keep my balance around £500 as a buffer zone, as soon as it goes above £500 in credit, I get an e-mail to tell me my DD is reducing to a low amount to reduce the balance. Maybe keep your buffer zone a little lower than £1000?

I feel more comfortable having a buffer, you never know what’s around the corner, so if anything should happen and my income suddenly drops, then I have at least 3-4 months worth of electricity already paid for.