Don't throw them away, can you get them into bigger pots and maybe give them a little stick to climb around, I often don't put mine out till they are over a foot tall , keep them in a cool place..not frosty, just cool, that will slow them down a bit,it's a waiting game really, or if you havea huge pot plant some around the edges and give them some support, I use an obelisk, I then keep this pot in the greenhouse till the weather is really nice before it goes out,by that time they are almost flowering, we get very early beans that way.
2 things to think about, and don't worry we have all done it.
XX Jeannine