Ditech Financial LLC Mortgage Complaint

Ditech Financial LLC Mortgage department,

Conventional fixed mortgage Application, originator, mortgage broker California

Received multiple offers from Ditech ( who currently holds my mortgage ) for a re-fi at a lower rate. Called them and was approved, received papers, signed and returned. No word for several weeks. Contacted again and was told I was denied because there was a " business '' on the property, which was there when we re-financed through -, which got passed on to - - - - -, etc., and then wound up with Ditech. How can they turn me down as they hold the mortgage? I am currently at - % and need a lower rate to continue.