This company is a scam. When we moved into our flat we were with spark energy for 12 days, we were sent a bill and paid it. We then changed suppliers. Spark has since pestered me saying I owe them money even though I have changed provider. They have sent my details to a debt collection agency after multiple phone calls where they stated I didn’t owe them anything. Customer service are extremely rude and unhelpful. I asked to speak to management to discuss my issue and they blocked my number. I have sorted it with the debt collection agency yet they CONTINUE to send me emails