Dealing with lane neglect?

Ok so it seems like every game I play I have a jungler that neglects the lanes. I ping and ping for help, ask for pressure or to just show/hold lane to give me time to back. They say things like "Nothing I can do" and just either farm jungle or do dumb invades that kill them and snowball one of the lanes. So I guess what I want to know is if I'm being pushed in top and the jungler refuses to do anything about it, how do I handle it besides farming under turret? Do I just give up lane, roll over and die until late game? I understand the potential for Teleport plays to get back into the game, but that's not always going to happen. I'm not Diamond+ so I'd like to know how to handle situations like this. Most cases I just farm under turret and turtle until I get zoned off by potential dive threats.