They should count Friday as day one and today as day two. BT are sneaky . I'll look into the re directing option to my mobile and i am glad to hear that my broadband although slow will hopefully continue to work.
If you logged it anytime on Friday, it doesn't count until the next day on Level 1 - "response time is next working day" (Monday), and fix time is supposed to be next + 1 (Wednesday)., and Committed to be Fixed by is the day after (Thursday)
It's "sneaky" I guess, but if you reported it at 23:59:59 on Friday, would you count it as "Logged it on Friday" - probably not, but that's going to get day 1 as Monday just the same as if you reported it at 00:00:01 on Friday. Sometimes you win, sometimes you lose.
For an additional fee you could have better levels of care - up to and including "within 6 hours, 24/7/365 for a fix".
You might not consider that worthwhile mind once you saw the price, and would then reassess how "urgent" it is - inconvenient it may be - but urgent... not really.