Anthony, you can threaten to sue! ;-D
That can be a very powerful tactic as long as you plan on following through if need be.
We have done this several times with great success however this was done to collect commissions which people tried to avoid paying by going directly to the landlord and doing a side deal but those are other stories, got a ton of them!
Broker of Record
Marivic GMAC Real Estate
2056A Lincoln Hwy. (Rt.27)
Edison, NJ 08817-3330
Office: 732-650-9911 Ext.302
Toll Free: 1-866-745-GMAC(4622) Ext.302
(MIDDLESEX MLS SEARCH) http://search.victor.msx.mlxchange.com/
(GSMLS SEARCH) http://www.gsmls.com/
(Monmouth/Ocean MLS) http://monmouthoceanmls.com/victor