Not fun is it, still hopefully you will get her back and looking brand spanking new.
On a positive note at least you are not cranking up the miles in the zed.
I know how you feel, i dropped my roadster off for what i thought would be a quick couple of days job, its now expected to take 3 weeks, all when the sun was out and shining. Typical. Getting fed up of the courtesy car, just want my zed back.
At least your zed will feel like a supercar after being in the corsa for 2 weeks