Was I being rude?

Anonymous
A long time friend (10+ years) told me I was rude for this interaction, among other things. We had made plans to hang on Mon the previous Fri. They said me not saying anything about time or place until day of Mon morning and saying I'd let her know when I got of work was rude. Was I? (I'm in blue).
Was I being rude?
Was I being rude?
Updates
8 mo
She mentioned it was rude to have her on standby since I didn't know when I was getting off and that I took too long to respond
Was I being rude?
4 Opinion