I had a similar situation with DHL. The driver was new and could not find my address so the package went back to the warehouse. Long story short...DHL customer service was in contact with me several times as they tracked my package. They then sent a driver out that evening with my package. While it was not an ideal situation their customer service was outstanding. You should also contact Mike at liverocks.com ASAP
and let him know what is going on. He will make things right for you. Once agian...outstanding customer service. If you get the rock tomorrow it should still be okay, however, I reccommed curing again outside of the main because there will be some considerable die-off due to the extra transport time. Good luck and keep us posted.