I'm working for free .. Frustrating

Theres no safety to getting to any point in a sales deal to know you will get paid I had three different retail sales where large banks give commitment letters and rescind them based on FICO scores dropping & BMI being to high not together but separately each deal having something different. We need to institute something where agents get paid once a deal past a certain point. You can tell the buyers what to do but if they don't heed your good advice, agents should be compensated as well as the seller for buyers inabilty to close after a commitment letter is issued. The bank got the application fee and the attorney got their deposit, what does the agent get ... Nothing. Im sorry doesn't pay bills ask anyone.