Started a new job 7 weeks ago. I’d been out of work a long time, years in fact, and it took me a long time to get this job. I absolutely love it, it’s fulfilling, interesting and fun and the people are lovely. I work three days a week and was offered an extra day which I accepted. When asked when I could start it I said I could start the week after next (this was on 19th august, so stating extra day on Wednesday 31st). However last Monday I remembered I had something I can’t get out of on Wednesday so I messaged my manager on the our instant messaging thing and said I’m really sorry but I can’t do the 31st, she said that was ok. However I’ve just noticed I’m on the rota for a half day on Wednesday but I honestly can’t go in, I have no childcare and I cannot get out of the appointment I have, it’s important. I’m terrified they’re going to see me as unreliable and sack me. I don’t know how far the instant messaging goes back, just hoping I can log on in the morning and find it. There are two managers and I have a feeling the one I told isn’t the one who did the rotas. I absolutely love this job and don’t want to lose it, in my contract I’m contracted to do Mondays Tuesdays and Fridays. The management are really lovely but I’m just so scared of losing this job.