None, None and did I say NONE!!! This is the kind of scum that needs to go back to selling used cars or to his telemarketing job.
Even if you signed a buyer broker agreement, this agent violated the covenant that says that they are acting in your best interest because they did not!
I assume he/she has not contacted you and if they do, they have no leg to stand on so just hang up if they call and shred any paper they send you.
And, if they proceed with harassing you, the CA Department of Real Estate would love to here from you.
Best of luck with your new place!