First, what does your rate confirmation say? Does it say anything about this situation? It sounds like the driver sat around for 47 days waiting, please tell me that is not true? Your only couse of action is to hire an attorney. Lastly, in the future don't EVER agree to drop your trailer at a receiver for 48 hours! Your driver stays with it, and if it is not unloaded in a reasonable amount of time you re negotiate a rate to return it to the shipper.