There is something about that "I understand life is rough, I'm just worried about your other customers reactions." that really rubs me the wrong way. If you're unhappy then you're unhappy and you need to express that not play up how understanding you are and how you worry about how other less understanding customers may react to the poor service she's providing.

Stand up for yourself. You don't have to be rude about it but remind them they have told you repeatedly that your commission(s) was in progress and you still don't have anything to show for it. You can still be patient and keep your cool without letting someone walk all over you.