Something I'm tired of junglers doing

Something that I've encountered a few times is when I ask for a gank when I'm losing lane and my jungler says "I'm not ganking your lane. Your enemy laner is too fed." I could understand my jungler saying this if my enemy laner had a crazy amount of kills and more gold than Bill Gates, but usually I get this when the enemy laner has around three kills on me and is barely a level ahead of me. I could just farm and do nothing else, but the enemy laner is obviously going to try to harass me because they are stronger than me. I obviously can't kill them solo, but I could almost definitely kill them with the help of the jungler. Unfortunately, my jungler is convinced that this level 8 Lux is literally immortal. Is the enemy snowballing? Yes. But if you help me kill them, I can get more cs and stop their snowballing. I hate blaming the jungler because of how hard their job is, but these junglers are barely doing their job.