So assuming that you've been screwed over by a developer I would question why you've paid all of this upfront before receiving the deliverable binary? Surely you've got a contract in place that puts you on a legal footing? I can understand paying some of the bill up front, but really it's bad business practise if you've paid everything up front and not got what you want.
But can't you see that it would be very easy for people to undermine Corona Labs's efforts? Deceitful developers could easily download the free trial, create a game and then get somebody to build it for them - Corona doesn't get it's license fee and if taken to reductio ad absurd that would essentially force Corona out of business if everybody did the same thing? I, as a paying developer am not happy about that prospect.
As Juf Jannie has said you need to learn very little when it comes to the build process, there's no coding whatsoever and Corona holds your hand through most of the process. However I do offer some sympathy if you have been left in this situation and can understand your request; I jumped off the handle because I assumed the latter situation.