https://www.ofgem.gov.uk/publications-and-updates/ofgem-secures-free-energy-npower-customers-late-resolution-ombudsman-decisions
So it seems that not only does Npower dishonour it obligations to its customers but it also dishonours it obligations to the Energy Ombudsman as well.
Let's hope that Npower's legal clerk- Kenneth Radley Davies is watching
Thanks to Eversir for this heads-up