I switched supplier from Economy Energy (to SSE) at about the time of the collapse of Economy. I took actual readings, but they are still threatening to take further action for the non-payment of the final electric bill, which they are ESTIMATING at more than it actually is now (6 months later); they are demanding over £400, despite SSE raising a "Cost Dispute" with them, and giving them the actual readings again, they seem unable to come up with an accurate bill. When I get a bill based on actual readings, I will pay it. They have not even been able to record my name on account correspondence. Awful, no wonder they went bust, but they are still trying to get people to give money they do not owe!