This has been causing me no end of problems and I'm wondering what others would do...
I took on 2 children on who had 2 clubs organised on the same day. One clashed with a school run but the other was ok, and the other kids I have were happy to join in. When the contracts were signed it was agreed that a family friend would do the first club but this worked twice I think and then got forgotten about.
It now seems like it's my fault that the kids miss some of this session. And today, when 2 out of the 3 kids I have were sleeping and I decided not to go (after asking activity leader if awake child could go in without me but told no), I got a very pissed off sounding reaction from the parent. I'm not sure what the parent expected me to do in this situation!