The situation is, I phone somebody in his evening and I feel sorry because it's late.
In my mother language, there's an expression like, "Sorry for causing you to sleep late" or "Sorry for affecting your rest". These sentences mean if I don't call he could go to bed early.
If I put the sentences directly into English, I think they sound weird. Is there a better way or native expression to say the same thing?
Thank you so much!