The curious case of Milestone payment - experience of Peter Jimenez from Miami, FL

At freelancer.com there is a feature called milestone payment which is sometimes called as escrow by the users. This feature is supposed to give the worker guarantee that the employer deposited payments which is to be released to the worker after completion of the project/partial project. Once employers put money in milestone payment system only the destined worker can receive or cancel the payment. What happens when the worker neither contact the employer nor does continue the project? What happens to the deposited money? Here is the story of a victim employer.