Consumer Financial Protection Bureau. CFPB Now Accepting Mortgage Complaints. The Consumer Financial Protection Bureau began accepting mortgage complaints from consumers through its websitefs home page, as of Dec. 1, 2011. To file a complaint, a consumer has to describe what happened and what would be a fair resolution. The consumer is presented with a menu of options and has to specify the type of mortgage involved (conventional fixed-rate, FHA, etc.) as well as the part of the mortgage process involved that is the source of the complaint. Once the complaint is filed, the relevant company will be notified, and the consumer will be provided a tracking number.