The buses were canceled ln the day without any reason added to their cancellation in the live departure boards on the Network Rail all.SWR have had shortages this weekend too apparently, though luckily I've not needed the trains. And quite a lot of my stagecoach buses in the basingstoke area have been cancelled over the last few months it seems due to "driver shortage".
I don't mind getting a tail replacement bus from its starting station or one that is manned but elsewhere it seems hit-and-miss.
For example tonight I arrived at bus stop C in Godalming, which isn't near the station and the 19:42 either bever showed up or left early.
Although Twitter staff got hold of the travel supplier they couldn't find out what had happened. When I actually got to Guildford station I asked some staff who were dealing with the replacement buses but they were only given a departure timetable and nothing about arrivals.
If the bus had been canceled, it certainly wasn't showing as such