Yup its been really bad luck...Nokia Care sucks since many years; this is the reason i abandoned Nokia too after the n93 but the n9 is too good to be let go...Anyone you ask on this forum except for the two trolls who should not be named will tell you their n9 is their precious...

Just one question; why didn't you test it out in front of them immediately when you were collecting the phone?

AFAIK if they give you damaged goods twice at the point when you were collecting it, you can demand a new device; after all it seems like a lemon is being sold to you...

Lastly, once you get your phone, head over to the Comprehensive Flashing Guide thread and flash your phone before doing anything else...Get rid of all the mess they may/may not have done to your phone...