Totally disgraceful. I shall leave an account of my 7 days with them (and the 3 months since). We moved into a property already served by Ovo, we initiated a switch straight away to another provider we have experience with. We gave all our move in meter readings and then we gave more meter readings 7 days later which is when the switch occurs. These have also been passed on with photo evidence to be sure. Since then we have had 4 final bills, we have paid over £100 for those 7 days (just myself and my wife live here and we were not running the heating that week) and have had numerous harassing phone calls demanding money from us. I honestly don’t know what is going on over there or why they can’t get it right but after finally getti by confirmation that we are paid up with everything, they now say we owe more still, way over what we calculated it to be but it was exactly what they said down to the kWh. To be clear, we have paid what they said we owed, the meter readings and their calculations all check out and yet they are still asking for more money. Each call is opened with a confusing and vaguely threatening spiel about how we owe money and we need to pay now and all calls came on the same day the bill was generated, not after, before we even had a chance to look over it and work out what is going on. Avoid these predatory pirates like the plague and go with someone Which? recommended for the love of everything you hold dear.