I went here once and the staff denied an old man f...

I went here once and the staff denied an old man from buying alcohol assuming he was drunk and he could not be served. The way he spoke to this elderly guy was rude and insensitive. This old guy came to the liquor store on a taxi as well (responsible) than had to return. The staff need to make a proper assessment in future. I work as a doormen and we're trained to stop people coming in that is over the limit or appear like they've had much and I can tell you this guy wasn't. The staff made a choice, stuck to it, really rude about it. No good.