From experience with Octopus, like some other companies, is that they are likely just to tell you what you want to hear rather than admit that they do not know. I had this one one (of several) specific occasion that spanned a couple of weeks (the answer given bore no resemblance to the [straight forward] question asked), same person. In the end, the Octopus chap admitted that he didn't know but just said something to prevent having to escalate the issue. In the end it was escellated and I got a meaningful answer quickly. Would have saved a lot of bother had they just said "I don't know" (which many company representatives seem to have an aversion to saying) and even better, as they did in the end, add "but I can get someone who does know/find out for you".
tl;dr - Octopus - another company who will just make up anything as a response to something that they do not know.