Well not quite, but i don't think 5 pods is much return on a packet of seed.
Sowed 27 seeds succesionally over 3 bags of compost (Lidl's) and I could see them failing. Chucked the rest of the packet into a row in the plot and they also seem to be going the same way. At first i thought it was maybe the cheap compost but now the ones in the plot are doing the same.
What is happening is that the flowers are just turning black and falliing off the stalks. The leaf tips then turn black and whole leafs just die away. The stems seem fine and green. No insect pests seem to be present, I keep them well watered, I see bees and hoverflys visiting, but very few beans.