Dried garbanzo beans not expanding when soaked
The soak doesn't swell them to 'cooked' level; the cooking does that.
It is true that very old beans will never be tender, but you have no good way to find that out before you spend the next two hours simmering them. [Change the water first &amp; don't salt them until the last half hour].
This covers most of the basics, over several methods - How to Cook Dried Chickpeas (Ultimate Guide)