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Microbusiness using under 100,000 kWh for Power

Microbusiness using under 293,000 kWh for Gas
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Our Complaints process

We work hard to provide the best possible service for all of our customers. Sometimes things can go wrong, and when they do we want to resolve them as swiftly as possible for you.

There are two steps in our complaints process:

Step one – Get in touch

Contact our Customer Service team between 9am and 5pm, Monday to Friday.

t: 0800 804 8589


a: Building 2, Level 2, Croxley Park, WD18 8YH

After you raise a complaint, we will investigate it. Our Complaints Team will acknowledge your complaint within 48 hours to five working days, and aim to complete their investigation within ten working days. We will give you a detailed explanation about our investigation and our decision on your complaint.

Step two – Escalate your complaint

If the complaint has not been resolved within eight weeks, or you would like us to review the original decision of your complaint, you can contact our Customer Care Team. The team are available on 0800 804 8589 between 9am and 5pm, Monday to Friday. Alternatively, you can email

We will then aim to have a reviewed decision for you within two weeks.

With microbusinesses, if after eight weeks we can’t resolve your complaint or you are not satisfied with our decision, you have the right to refer your complaint to the Energy Ombudsman.

As an independent body, the Energy Ombudsman is able to arbitrate any disputes between customers and suppliers. The service is completely free to use. The Ombudsman has the authority to resolve a complaint and suggest corrective action to be taken by us or you. If you accept the Energy Ombudsman’s decision, we are then legally obliged to put the recommended solution in place. You can decline a decision by the Ombudsman and take your complaint elsewhere such as the courts.

You can contact the Ombudsman by:

t: 0330 440 1624 (phone line open 8am-8pm Monday to Friday, 9am-1pm Saturday)

e: (emails are responded to within five working days)

a: Energy Ombudsman, PO Box 966, Warrington, WA4 9DF


Please note the Energy Ombudsman will not investigate complaints made by non-microbusinesses.

The Citizens Advice Bureau

If you need independent and practical advice you can also contact Citizens Advice. This service gives you free, confidential and impartial advice.

We have received a number of reports that Corona Energy’s name is being used to fraudulently solicit information from our customers. Our Customer Service team is UK based and we would never ask for any information including address or payment details without going through our comprehensive data protection check first. If you have been contacted and concerned please call us or alternatively contact Action Fraud on 0300 123 2040.