Huntinginthedark Your response was unnecessarily harsh.
I doubt the op likes feeling this, and she isn't being unreasonable in wanting to know that her partner is safe.
That said, op... my dh did this on occasion. I adjusted my thinking around it. When he said he'd be home at closing time (when pubs didn't stay open all night) I KNEW wouldn't be, and would add a couple of hours to that time. This is because he would go to a club with mates, or back to someone's house.
This was pre mobile phone era, and we didn't have a phone so I would just have to see him when I saw him.
Making your anxiety worse over this, when you know what he can be like, it daft. I agree that you should get some help with this.
As a first starting point though, you know your dh is unreliable with his phone when drinking, so relax your own expectations around that!