NPower are crap and their customer service abysmal. they were just rated the worst by Which.
I'm sure the Direct Debit guarantee covers you. Get everything down in writing and blitz the bank and the -useless- utility company with stuff in writing. Don't just deal with the numpties on the phone. I think this is the person we were told to contact by Energywatch.
Sheryl Chappel
Customer Relations
NPower
PO Box 313
Gateshead
NE11 0ZT
That's a fab idea about the photo of the meter. do you have your last bill?
We had awful battles with Npower but won in the end. Poor you, what a horribly stressful situation. I hope it gets sorted soon.