I hate when I’m on the phone venting to someone and they just listen

Absolutely understand that. Pouring your heart out and barely getting a "yes" and "that sucks", to me personally, well... that sucks.

I've had the sort of opposite happen. Someone vents to me, I give advice, they get utterly pissed off at me because all they were really looking for was someone to listen and support/agree. They didn't actually want advice.

That makes me a bit more hesitant to give people advice when they come to me to vent. Unless they make it clear in advance, I actually have to try to interpret what they want first - if they are looking for advice or just someone to vent to - and even then I sometimes get it wrong.