A review signal: what 1,120 one and two-star reviews say about 30 UK energy suppliers, and who answers them

Recent Trustpilot reviews of 30 UK energy suppliers, read at $0.25 per 1,000 rows: how many are one or two stars once you separate invited reviews from organic ones, what the unhappy customers write about, which suppliers reply and how fast, and an n8n workflow that posts a competitor's bad week to Slack.