Back billing from Electricity supplier

suffolk_eagle

Hi all,
I’ve been with OVO for about 3-4 years now and recently decided to switch supplier.
I have used their app to enter meter readings etc since I joined them and saw that I had £1800 in credit!
It’s been taking a while to get this refund so I emailed them and their response states that they have never billed me. I can see the readings etc in the app but never realised they haven’t billed me???
I opted out of paper billing on sign up.
I’m now panicking about how much they’re going to bill me.
Any ideas about rulings concerning how far they can go back? I haven’t hidden anything from them, I’ve even contacted them numerous times over the phone regarding smart meters etc but just never even thought they weren’t billing me.
I can see usage etc in the app as well.
Thanks in advance

Streaky_Bacon

Log into your account and take screenshots of everything and download any documentation. Take screenshots of everything on the app too. Do it now so that you have a record of the current situation.

They can only go back 12 months, but there is a question mark over whether they can go back further if there is a credit balance, see the comments here:

https://forums.moneysavingexpert.com/discussion/6099075/eon-back-billing