I work for Npower (because there's no where else).
I don't know about other advisers, seems every time someone calls some adviser has screwed with someones account, I've gotten like 30 people sacked so far for not doing the job properly.
You need to stop complaining about your DD going up, its in your DD agreement that it will get re-assessed, based on usage/debt/credit.
Sometimes it goes **** up and does it completely wrong for whatever reason, because the system we use is so bad, its not even designed for the job.
Get this every day from people by the way...."why has my DD gone up! EXPLAIN YOURSELF!", "I AM A PENSIONER YOUR GOING TO GIVE ME A HEART ATTACK!" Oh please....
If you don't want your DD going up, ring with meter readings every month and get it re-assessed there and then.
If it goes up....call, give readings and re-assess, its not hard. Its your responsibility to give readings.
If it goes down....call give readings and re-assess
If a payment isn't taken, either you dont have enough money in your bank, we have the wrong details or an adviser cocked up the DD process and didnt do it correctly (this happens allot, I don't know why people here as so stupid)
But anyway, all the problems are easily sorted.