I'm not sure that's even clear. "The money was frozen and they told me that it would stay that way" What is "the" money. The only money mentioned prior to that is the $1300. No where does the user say all money was lost except the $1300. They say their account was closed, were they sitting on a ton of cash in their account that they didn't transfer out? They don't state that.
Just move on and use Upwork.com.