Do not, under any circumstances use this Company. Their Customer Service and Accounts Department are absolutely useless!!!! I see that Shell Energy have bought them out - no self respecting Company should put their name to them. We had a property that we rented out and the tenants chose First Utility as their energy supplier. When our tenants vacated the property, we read the meter and informed First Utility that we were responsible for any electric used whilst the property was empty. We subsequently sold the property and gave First Utility the final meter reading. We received a bill for £245.69 which we paid by debit card on 6th June 2017. Since then and to the present date May 2019 - we have received letter upon letter, asking us to pay this outstanding bill or take the consequences I cannot count on one hand how many times, we have telephoned accounts, and customer services over this dispute. They couldn't sort it out, and at their request we sent them our bank statement which clearly shows the transaction (with their name against it) going out of our account. We thought that the problem had been solved, until we received another letter in November 2018, saying the same thing, account outstanding, threatening recovery action. We telephoned again, and finally got through to the investigation team- and was assured that this would be sorted. We heard nothing, and now we have a letter from Shell Energy asking for payment yet again. Another phone call and this time we were informed that a default had been lodged by them against my husband's credit score. This has been the final straw, not only did they not inform us of their action, but they have unjustly damaged my husband's credit rating. What " part of proof of payment" don't they understand. We are now putting it in the hands of our solicitor