Energy firm Npower has apologised again for customer service problems that have taken "longer than planned" to be resolved.
In a statement the company said its CEO Paul Massara had written to customers last year to apologise for the issues, which were "caused by the implementation of a new computer system".
The company says a number of measures have been introduced to tackle the problems:
- An extra 650 have been assigned since December to help resolve problems
- Late invoice and complaints data will be published monthly
- An additional £20 million will be invested this year to deal with customer service issues
- A ban on outbound telesales calls if late billing targets are missed
More top news
European Union leaders are attending a special summit later to formally agree their Brexit negotiating strategy.
Most places across the UK will stay dry all day, with sunny spells, particularly in the south.
The Royal Marine jailed for killing an injured Taliban fighter in Afghanistan has spoken for the first time since being released from jail.