mshrek
Dear God,
All I need is just one invite !!
Regards,
Desperate MBA aspirant

Sometimes the MBA journey is a multi-year ordeal. I applied to my first school in January of 2014 and didn't get my first interview invite until last month. I know it sucks watching everyone else get invites and admits, but eventually you'll get something. That might mean talking to schools about the perceived weakness of your application, then taking a year to strengthen your story or application. I am pretty confident that my downfall was a lack of work experience and I had not yet solidified my story. I was 0/3 before January this year, and now in R2 alone I've got 1 admit with money and a pair of interview invites out of the 4 schools I applied to. Keep your spirits up and try again if that's what you need to do.
Also, there is still time to get invites. Don't give up hope until the end.