I was moved from the absolutely terrible SSE to OVO when they took over SSE. I was given no choice but was hopeful it would be a change for the better. It wasn't! They are still almost impossible to contact by phone with waiting times of up to 2 hours and when they do finally answer it is a call centre employee who can do nothing to help you. They have failed to keep 2 appointments now that they made to install a smart meter and gave me no notice of not arriving, despite knowing that I had to make a 300 mile round trip to be there each time. To do this once was bad enough, but to waste my time, energy and travel expenses again in exactly the same way is just unbelievable! They are as totally incompetent as SSE was before the takeover.. possibly even worse! I have still not received a proper statement from either SSE or OVO using my actual meter readings. They only make grossly inflated estimates, so I have now overpaid them hundreds of £s over the 4 months I have had the misfortune to be stuck with them since buying my flat. Avoid them like the plague. I can't wait to switch suppliers.