Sorry to hear that.

the same thing happened to a friend of mine who ordered one of the 1st C6 corvettes.

He ordered the 6 speed and when they delivered it, it came as auto!!

It happens but how the hell it does is I don't know.

Have the dealer, not you, search for another built 6 speed like yours. If you want a stick, stay with it and get a stick.

It is there mistake, so they should search for a 6 speed for you.