Was I in the wrong or is he crazy?

My bf got out of work early and I was with my friends. He was trying to call but they were joking and putting up the volume so I couldn’t hear. I didn’t answer, I just let the phone ring. I texted him what was going on and he got mad because he said I could’ve at least answered and he would’ve heard the sound or something. 🙄 He didn’t answer my calls later