It is very possible the agent you called isn't responsive.
My suggestion is find a single agent who will work with you until you closed the deal.
DECORUS REALTY LLC
Tel : 305-900-9121
I looked on the multiple listing service and the unit does show up there, however it has been available since Sept. so I am guessing the property is already rented and the agent has just not taken it off the market.
I have sent an email to the agent inquiring of the availability and I will contact you back here if I here an update.
In the meantime, you are welcome to search my website below for additional options.
South Florida Brokers