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Ovo Energy got its best rating (three stars) in our customer survey for Gas line services; https://Bfme.net/home.php?mod=space&uid=2398696, overall customer service. But five other firms out of 18 managed four stars, and one firm achieved the full five stars. Ovo Energy was among the lowest-scoring firms among 16 energy companies rated by 9,025 members of the public in the annual Which?