Second, payment of commission relies on an agreement between broker and principal, whether that's seller or buyer.
Forgetting is not only a way to miss out on earning a commission but also a way to get disciplined for not following the rules.
See an attorney.
If your Realtor failed to have you sign the listing agreement ...that is one thing.
If there was FRAUD involved....that is something else.
Either way, ask your attorney or your Realtor.
What? I really donâ€™t understand your question. Did your agent forgot the minor detail of getting a listing agreement signed and listed a property without that formality? If so, there may not be any legal requirement to pay that agent. In fact, that agent may have violated ethical practice if a Realtor and had no right to offer the property for sale nor act on behalf of the seller.
What happened? More detail would be helpful.