My 88 year old Mum who only uses a Netbook for emails has been on a 10Gb monthly limit for over a year with Plusnet and never reaches anywhere like that usage. On Tuesday (15.12.2015) Plusnet demanded another £5 claiming she had used her monthly allowance in one day! Plusnet helpdesk claimed she was streaming from dawn to dusk for three days! Nonsense, she only sends or receives small emails. I checked all was ok with the router, no-one else has access. Checked with a friend who is on unlimited package- Plusnet website usage claimed he was streaming when he was in Spain for a month with the mains all switched off! Plusnet helpdesk a waste of time. Will anyone from Plusnet admit a problem occurred last week and ensure no-one is charged extra? Or is it a trip to the small claims court my only next step? ps I checked my usage too. I've been streaming off and on for a week, but apparently did it without any data usage whatever... a Christmas miracle perhaps?