my first reaction as a broker is that you made your deal with the broker, but as a business owner and having operated assets for years before changing to broker, I know exactly where you're coming from. It would be a short conversation with shipper if they already paid, cause they will not have to pay twice, regardless of the broker's incompetence, but if the shipper is an ethical business person they don't want to be involved in this kind of crap so they should lean on the broker to take care of business. So I guess I would say yes, contact them, softly, and explain where you're coming from and wait for the broker to react. Failing that let all your friends know who the broker is before they start burning people all over town