Find that payphone

This Thursday, 5 May or rather 05/05/05, 5FM will be giving away R55 555,55 to 10 lucky listeners throughout the day. Each hour on 05/05/05, at 5 to the hour, listeners will be given 15 minutes to get to a payphone at a designated location in South Africa. The ringing payphone, and the phrase "555, I'm listening!" into the receiver, gets them the cash.