We are on day 19 or escrow and our lender decided to change the interest rate..Good faith deposit refundable?

I really don't know Ca purchase procedures, more refinance but something doesn't fit. A good loan officer will know damn well when dealing with a jumbo loan, they are not easy to get approved right now, I actually lost one since it took me 3 days just to find a lender that would give a rate under 8% for 15 years. It could be a simple error, everyone makes mistakes. I don't know this person, but I have to admit this would be a big red flag for the loan officer and it should have been caught