Help with cho jg

Ive been almost absolutely destroying as cho'gath jungle recently...

The only problem is, cho can't 1v1 the drag with the safety of say xin xhao or fiddle or even amumu, what do I do to secure it? sure I have my ult that does 1.2 k true damage to it, but if it gets me down to 500 health before its even at half when im trying to 1v1 it...

now I know what youre thinking "well just ping assist at drag"... well im in bronze 5 now because of an incredible string of afkers and trolls and a few bad games, and to put it bluntly - and im trying to avoid saying it - my team fucking blows donkey cock at league.

We'll get a double kill bot and I see that the enemy jg is at top. Im pinging the fuck out of drag, but no one comes, mid lane just farms and the supp and adc either back to cash in on the gold they just got or continue to farm, not even push in the tower, just farm. I would 1v1 it, but if the enemy mid laner comes im fucked. I would stay and help the adc push the lane in but then I get a million back off pings and "GTFO adc farm noob" Can someone please tell me what to do? This has happened to me more times than I can count.

The problem isn't cho jg. I'm consistently doing great with him, this is the only issue im regularly having. I put my pink on drag after the above happens. I know they don't have vision, but no one on my team comes, so I usually just go take the enemy jg wolf and or blue, then go farm. I still have my pink on drag, but as soon as I gank top, my bot lane shits the bed dies 2v2 to their lane, then next thing you know my pink is gone and mid is pinging mia and all of a sudden they got a free drag, even though I see it coming and am pinging on drag and running down their as fast as I can to flash in and use my 1.2 k smite ult on it, but still cant get there in time.

What do I do when I have shit teammates like this? How do I keep drag secured? Or even rift herald?