AITA for expecting my boyfriend to tell he his plans?

So for some context, my boyfriend 20M and i 19F have been together for a little over a year. He has as habit of going places and not letting me know, we don’t live together so this obviously bothers me. I’ve brought it up multiple times and he always says he’s gonna do better then i’ll see improvement for a few weeks and then it’s right back to square one and he did it again today. For some backstory, we were otp this morning he was sleeping and i was on my laptop so after a little while i hear him speaking to his mom then he just hangs up. This doesn’t bother me bcz it happens sometimes and he’ll just call back except this time he didn’t. I waited a while (2hrs) then decided to call him back. He tells me he’s out them hangs up abruptly, now I’m not speaking to him bcz I’m upset and he seems to think I’m wrong for being mad.

AITA for being upset?

Edit: thank you all for commenting and i can see how i would be wrong in this situation. i appreciate the constructive criticism and i’ll take it into consideration. The fact that he goes out doesn’t bother what bothers me is the part where he goes hours without even sending me a text message or letting me know what’s going on. I don’t know if im expecting too much by asking for the bare minimum of communication. I have also expressed this concern to him many times so he knows how i feel. As i said i see where i may be the asshole but it’s kinda unfair given that he expects me to keep him updated throughout the day or whenever i’m out.