Very very poor customer relationship building. Two complaints about bills and the estimation system that they have put me in hundreds of pounds of 'debt' to Npower. After resolving the first complaint and Npower advising on the 'correct' monthly bills, I then received a further bill for another few hundred pounds because of incorrect estimation and the guy on the end of the phone even agreed that it was a 'service error' to which the standard reduction from this wrongly billed amount was £25...shocking service...have now switched.
