Minor dents will not cause a problem. What IS a problem is a loose bullet that can slide back into the case upon loading.
I hope those weren't sold as new ammo--because they look like reloads where someone went nuts with the case lube.
You could possibly get a Lee Factory Crimp die, and attempt to re-crimp the rounds--into the cannelure.
Or, you could contact AIM Surplus and explain your displeasure.