MFC approved financing, only later to reject without communication

I app**** for financing for a car earlier in the week. MFC approved my application, only to later reject it. I have not received any communication as to why this has happened, all I’m getting is hearsay from the dealerships. I was ready to collect my car on Friday, next thing I’m being told that I can’t. I really need answers because consultants don’t even help with anything, and I’m desperate for a car. I had insurance and everything ready to collect the car. How disappointing