As far as I know this company is the lowest-cost option if you use significant amounts of power overnight. It also has the benefit of having "green" credentials. Where it falls down is with customer service. It took me many months to extract a refund from them, but eventually they did it.

Easy and simple. Honest pricing. No problems with billing etc and struggle to find cheaper

I contacted them with a query on providing my account and meter readings - they answered my questions quickly and clearly , very happy with the response.

Incorrect information provided on sale. was promised a dual rate tariff on the phone so signed up, on submitting my meter readings they then tell me that they don't offer it so after switching they haven't honoured what I was initially told. Such a shame.

Very easy to sign up and information clear and straightforward

Run this account for my elderly parents and am very impressed with the helpful hassle free style of the company and the ease of webchat, if there is a query it's sorted out without creating issues. Very smooth. Thank you. Incidentally I have my Gas/Elec through sister company Outfox the Market and find them a pleasure too.

Good service, yes there were issues at the start and I was within a whisker of moving AGAIN! One year down the line and all seems OK. I did ask about a new tariff I noticed on MSE Cheap Energy Club, I was put on the cheaper tariff without question and they even backdated the readings to the last bill date. Lose a star for not advising me themselves and leaving me to find out by chance

Over the past year they have constantly changed my direct debit, leaving my account in debit despite regular meter readings. Then to rectify this they have taken almost £700 in the same month which was double the outstanding amount, willingly leaving me in debt and my electricity account over £300 in credit! Advice from them has been inaccurate (advising me to contact my bank to "stop" the direct debit, which my bank advised me they cannot do!) and now I have been told the refund I have requested to rectify their error will take at least two weeks to process. I honestly don't know whether I'm coming or going with the constant changes to the bill, and I'm concerned about changing supplier now as I feel they'll just retain the outstanding amount. Looking at other reviews this seems to be an issue with this company.

Good service received by online chat when reporting a problem with our electricity meter. Now awaiting appropriate action. .

Long time to answer phone.. many attempts to get an over payment refund.. average cost does not equate to meter readings. They also try to hang on to two months payments in advance

Very happy with the service from Dastagir. I have been an Eco 7 customer for a year. When I used a price comparison site (as I do quite often) I found an Eco 7 Tariff that I could find no details of on the website and it was cheaper than my current tariff. Dastagir offered to switch me. I said yes, and it was done immediately.

Was over £200 in credit and asked for a refund also wanted to change my monthly direct debit to a lower payment. Sam sorted this all out within minutes with a refund and a lower monthly payment, very satisfied

Farha was helpful and quick to understand what I was after

I used the webchat and spoke to Joseph, as I had some rather complicated questions to ask relating to some confusion over when meter readings were taken and what they were. I initially rang but there was a queue so chose webchat instead. Frankly if webchat is this easy I won't both with the phone, I got all the info I needed and everything was sorted out quickly, I'm really pleased.

Dreadful 'service'. I regret switching to E7E Foxglove.

Absolute joke of a company. my account has been over £450.00 in credit. i asked for refund, the refunded just over £200.00 and kept the rest. then renegotiated my direct debit to a lower amount. then they illegally took the wrong higher amount which left my account over £300.00 in credit. i asked for a refund, they said the could only refund the difference in the 2 direct debits and my account has to be a month in credit. i said i want to make a formal complaint and they said it would take 5 days to investigate. not good enough

Laura was excellent

Ive just switched suppliers, and It seems to take an age to get a final Bill and the £181 credit refund I'm due from the credit balance. I switched on the 24th May and still havent received the money! Its seems to me like they deliberately use delaying tactics. Contacted them several times and the first excuse was that they hadn't received my readings from the regulator. Seems very strange how they used the exact same readings to calculate my last Bill and they were not provided by me. On a positive note I will say that customer service were very polite and answered the phones quite quickly.

Lorena was v prompt and helpful. explained everything. and best of all, non| of the tiresome waits that you get on most webchats. great service. Sam was also very helpful {I spoke to 2 agent s) I would also add that we also had price rises (although most, if not all, other suppliers have done the same, and in checking comparison sites, I have yet to find a better deal than the E7 one (they should be paying me for this!) The DD level that E7 originally imposed, was clearly too high (and that IS a negative against E7) but again, to be fair to them, it was relatively easy to persuade them to drastically lower my DD payment, and they credited my account promptly with the £400+ credit that had accrued on my account. It is in no one's interest to set inaccurate payment levels - either too high or too low, but my advice would be that if you believe your payments are too high, and you can back it up with accurate meter readings over several months, contact them and ask for a more realistic payment level. It worked for me..

Laura was fantastic, it was actually the fastest webchat and easiest webchat I've had with any company, pleasantly surprised, makes me want to stay with them, well done eco7 and well done Laura :)