To be really naffed off with the bus company?

[Biggerknickersagain]

I travel to work on buses, and as expected, reduced service on Christmas Eve and New Years Eve, they released the timetable and as I'm at work on both, I had a look to see what I need to arrange. Work nights so 'reduced timetable from about 6pm' is likely to affect me. The timetable wasn't very illuminating, couldn't really understand it and isn't really a timetable, just a list of the times the last few buses leave the first stop and where they are going to.
So bus leaves A location at 5pm, 5.30pm and 6 pm and is going to Z location. Distance between A and Z is about 30 miles. I travel between K and S, I asked the online service for details of last services between K and S and I was directed back to the 'timetable'. I then said that I needed times the last services run between K and S rather than what time they are leaving 15 miles away because I need to get to work etc etc. Was polite and said I was probably being a bit thick because I couldn't find a timetable detailing a last journey.
The online service told me that's because there isn't one, basically the times given may be the last service, if there's demand, and there's no specific times for specific places for the evening after 6pm.
Isn't that just totally pointless? It means anyone that travels anywhere between the start and end have to guess what time, if at all, the bus will turn up. No good if you're going to, or coming home from work is it?
Imo would have made more sense to have a last definite journey so everyone knows where they are!

Yanbu! I used to live in a village halfway along the bus route and the driver would often give up and go home if no-one got on before me. Rubbish service.

If you know there's a bus starting the route at 6pm, surely you can work out from the normal timetable what time it will be at your stop?

They're not going to pull the journeys mid route, if they've said the last bus will be the 6pm start then it will be.

@Bombardier25966

Well no, because if there's no one at place A then the bus won't run (that's how I took 'if there's demand') and I have approximately worked it out using the ordinary timetable but, I'm no expert. I get to the bus stop 10 mins early as it is but I'm not relishing the thought of going to wait for a bus that a) might not even be running and b) isn't running to a timetable, so if it's clear and the driver gets his foot down I could have totally misjudged the time and miss it.
The evening buses here often stop in bus stops for 5/10 minutes to 'make up time' so they stick to the timetable, because it's fairly rural if no issues they can cover the distance faster than they 'should' IYSWIM

This sounds strange. When I lived outside London the last bus times were available for both days.