Some caution when you send the machine back; make sure its in its original hardware configuration. They can refuse service if its not. Even something like aftermarket RAM they sometimes throw a hissy fit over.
Is there no "authorized" sales and service people near you? Even though they are not Apple they still honor warranties and most the time they do good work. And they over look things like the aforementioned.
I might just take it to the genius bar so I can actually talk to someone, that's what the nice apple lady suggested.