My pain may not be as bad as yours, but I understand your problem. I have three "slipping" ribs that cause me pain since my accident a year ago. They are disconnected from the cartilege in the front and roll over each other every time I twist or bend or or sit in a chair or roll over in bed.
I've had nerve blocks in the front that did nothing. I've had nerve blocks near the spine that were pretty good for a month but are wearing off. I don't know if they will try another block or go right to the ablation (probably not cryo). This is supposed to last a year. Maybe.
The only other option I know of is removal of the ribs. But I have 3 of them! So I'm waiting to hear from you again.