I raised a fault on 18 August 2017, having no dial tone and regular broadband drop outs. This took a very long time to fix up for various reasons (Openreach had a different address to Plusnet so would attend appointments but find "no one in", swap my phone and internet with a neighbour, etc.), but eventually the technical fault was resolved in September.
However, I requested that Plusnet confirm, and if necessary, change my address details so that this wouldn't happen again (this was at least the second fault where the address mix up had occurred), and I also enquired about compensation for the lack of phone line and broadband for a period of time. I wasn't after huge damages, just reimbursing the monthly fee that Plusnet kept taking through this. I was told this would be "automatically applied".
I prompted this every couple of weeks all through September and October and messages were added to the ticket, telling me "no access to prov inbox", or something similar, which I'm sure is helpful to someone, but not me.
Now I find that the fault has been closed, with a change of address apparently made by removing a component of my address, and without any mention of compensation. I've checked my account details, and no refund coming my way.