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Contact Sainsbury’s Energy by phone to make a complaint by calling their freephone complaints number 08.
If you are not satisfied with your Sainsbury’s Energy price or service you should call their main helpline for free to speak to an advisor.
As this is their main customer service helpline, advisors will first attempt to put you in contact with the relevant Sainsbury’s department in order to try and resolve your complaint at an initial stage.
If you feel your Sainsbury’s complaint has not been dealt with in a satisfactory manner after this you can phone 0800 636 262 again and request to speak to a duty manager or if you would rather complain to Sainsbury’s by post you can write to them using their official complaints postal address which is: Complaints Department, Sainsbury’s Supermarkets Ltd, 33 Holborn, London, EC1N 2HT, United Kingdom.
You can contact the Sainsbury’s gift card helpline from 9am-pm Monday-Friday (their helpline is not available on weekends and bank holidays).
You can call both of these Sainsbury’s Energy contact numbers from 8am-8pm Monday-Friday and 8am-6pm Saturday, these helplines are closed Sundays and Bank holidays.
A 24/7 gas emergency helpline is also available for Sainsbury’s Energy customers by calling the official National Grid emergencies contact number 0800 111 999.
If after either of these second stages your Sainsbury’s complaint has still not been resolved you can then escalate the complaint to an independent alternative dispute resolution (ADR) scheme.
Unlike many major UK companies Sainsbury’s do not have an official ADR partner however they do list Small Claims Mediation (UK) Ltd on their website.