|
If you clearly told him that you could not do it, then you should not be expected to cover for his mistake. On the other hand if there is any question, then you should try to find a substitute for one or the other as you are clearly double booked. Next time if at all possible give the request in writing of some form that you can keep a copy of. E-mail is great if available as you can get a return receipt which shows the person opened it.
|