It is very discouraging your situation, we are at the last stage of preparing for delivery the forms, and i was thinking to separate the forms of sponsor (my husband) and the forms of principal applicant, as you did. i do have a question the form Schedule A (IMM5669 07-2011) has to be filled only by me (Principal applicant), which i did, or it has to be filled also from the sponsor?, my husband didn't fill the schedule A.
In my opinion, you have to write a complain letter, even if it might go to nowhere. you never know, may be they made cross-checking and take in consideration complains, it might have happened before you never know.
wish you good luck,