Hi
I would check previous bills to see if they were based on estimated meter readings. If this is the case the high bill could be a catch up. You may have been underpaying in the past.
Also, make sure there are no estimated meter readings on your latest bill. If there are take the actual readings and ask for a revised accurate bill.
If the high bill is a result of under charging in the past contact E.ON and ask for a payment arrangement. This will allow you to spread the cost over a similar period to that for which you were undercharged.
Should your bills have been estimated previously ask for them to be re-billed at the prices current at the time the energy was used. You should not be paying for energy used a year ago at today’s prices.
At the same time check the tariff you are on is the best for you. Discounts are available for paying with a Fixed Direct Debit and managing your account online.
Are you energy efficient? Savings can be made if you have things like cavity wall and loft insulation or an efficient boiler. There are also many small changes you can make to help save money.
E.ON has an energy efficiency team who advise on ways to cut usage. Give them a call if you think you would benefit from this free advice.
Malc