unfortunately, only someone at google can directly change a disapproval.
http://support.google.com/merchants/bin/request.py?contact_type=disapproved

see also
http://support.google.com/merchants/bin/answer.py?answer=160491
http://support.google.com/merchants/bin/answer.py?answer=188484
http://celebird.blogspot.com/2011/12/celebird-product-search-disapproval.html