Bills on estimated readings

SMO3

Hello All

Hope everyone is doing well, I use to be with Igloo energy, live in 3 bed mid-terraced rented house, and setup a DD when joined Igloo, and was advised by the customer service to turn off the remote monitor of the smart meter if I wish, and they will automatically get the readings.
When my accounts was moved to E.On Next after Igloo went burst I was given the bill of £2350.
1 - My ex-husband used to look after all the bills etc. I am recently separated and going through a difficult divorce court case, sending meter readings was the last thing on my to do list, when I already have DD set-up plus was advised by Igloo not to worry about it.
2- I do not have gas central heating,only kitchen/hob use, its bill is minimal, but electricity usage is high (working out about £200 a month), when I moved in the first reading 1st Oct 2020 was 7200 units, and when Igloo went burst (or when I found out) - 9th Oct 2021 readings - 15550 units, is it Ok to have so much electricity usage for a 3 bed mid-terraced house (one bedroom doesn't even have any electrical heating radiator), kids are at school/college and I am at work doing double shifts.
It feels like I have been cheated, already going through difficult divorce proceedings, started working for the first time and doing double shifts to meet end needs, and they E-On are saying I will have to pay this bill.
I am happy to pay on installments but I will only pay for the past usage on the rate I was with Igloo, even if its on the last (higher) rate, But E-on have used their current rate, and will ONLY charge with that. Have emailed them twice to get a clear answer but they never reply to email but they call me back, Not getting a clear answer from them, I am not sure if they have considered the amount I have paid over the period via DD (about £500).

I don't know what suggestion I am looking for and what I should be doing, I simply can't afford to pay this huge amount being a single mother of 3. I guess I need to understand how I should tackle this? Can I move to another supplier with my account in negative? If I WILL have to pay E-On on their current rates for energy I used in the past being with Igloo?
Happy for any suggestions and apologies for such a long message/query!

MWT

Duplicate thread, see reply here:

https://forums.moneysavingexpert.com/discussion/6321190/bills-on-estimated-readings-by-liquid