On 04/11/2016 20:23, Caecilius wrote:

It seems like the person at the UK power networks helpline is trying
to be helpful, but is just following a script and doesn't have the
authority to do anything other than put notes on the call log.

Does anyone have any knowledge of how to get the root cause of these
sorts of problems addressed?

Can you correlate the failure time(s) and frequencies?

Major high power systems like sewage pumping stations coming online
around 6.30pm was the trigger in my neck of the woods. YMMV

Club together with other disgruntled businesses, talk to the local TV
channel and involve your MP - that tends to get their attention.

--
Regards,
Martin Brown