In your case I recommend you contact the Florida Real Estate Commission (FREC) and tell them you have a "binder dispute" but before you do meet with your agent's BROKER. If your agent is the broker (owner of the company) tell him/her you want you binder back or you will got to FREC. This usually gets their attention.
J.D. "Dan" Weisenburger, GRI
Coldwell Banker Vanguard Realty
Remember, these realtors are not paid by the hour, and if you add up all the time and effort they have invested in helping you purchase this home 90k home, it's likely to ffar exceed the what this deal is worth to them.
Be understanding about the realtors efforts as they have bills to pay and families to feed too.