Booked load 3 pm went to shipper just to find out ...

Booked load 3 pm went to shipper just to find out it was suppose to pick up at noon....Shipper hold us until 8 pm ..Told Magellan we cant del 9:30 as we were hold at shipper , they said ok not a problem ....At receiver we got at noon went out 9 pm. Lost day , called and emailed Magellan over 20 times not even respond on email. Requested detention after delivery they refused to pay it even with in and out times on BOL.