If you've been contracting with customers to provide them your time as a programmer and charging them in this way, your customers need to sue you. Legal services are not a packaged product, they are time, and that time is what is being paid for.
If you want to bill on some other basis, fine, but you are not entitled to tell your clients you're billing them an hourly rate and then make up the hours based on the value you think is being provided. That's fraud.