Even though it is too late now, and most of us would not think to do it, you probably needed to ask a series of specific questions:
> Are the main spars included?
> What kind of wood are they?
> Is the leading edge included?
> Is it preshaped?
> Is the trailing edge included?
> Is the sheeting included?
> If there are cap strips, shear webs, or sub-spars; are they included?

I guess it would sound like a police interrogation, but it's the only way to know exactly what to expect. And, I wouldn't have thought to do the interrogation. It is easy to think of all of this from my chair, after you have described the bad experience and the evasive answers you got about what is in a "wing kit."