Had an "Alistar & Blitzcrank" bot lane not helping me with Krug Leash

I was Nunu, and I'm kinda new to him, but during champion select, this guy chose Graves at first, but in the end he picked Blitzcrank for some stupid selfish reasons, and so this is what they were saying why they wont wanna leash for me:

: Guys leash : Sorry, but we cant. We gotta stack (I dunno whats he talking about) : I'm only asking about 4 seconds out of 20+ minutes of the game. : Yea umm sorry no. : Wow, so you want me to help you, but you cant help me? How stupid is this? : Lol feel bad for the jungler.

In the end, Blitzcrank alone got 0/15 with his selfish builds before he buys a sightstone requested by me since he realized he was the most useless one in the team. Even "support at first" Alistar got 10/11.

Guys, when you expect to have great ganks or more help from your own jungler, just help the guy out. Don't be a jackass. And pick a champion meant to help the team, don't just think for yourself.