Attention to detail...
Being charged incorrectly for the first time to being given a £10 voucher towards a tesco shop as an apology for charging an incorrect amount towards a bill, then being sent a £720 bill. I've been passed on to Oriel due to staff from rebel energy having enough of me, I don't know whether I'm coming or going with this company, and to top it all off I never received any source of energy from them.
Save yourself a year of going back and fourth in emails with them and join a secure company (any company rather than this one).