My bus made an unannounced stop at a Delaware rest stop on the route between New York a...

My bus made an unannounced stop at a Delaware rest stop on the route between New York and DC.. **The driver announced that we had ** minutes to go inside and get refreshments use the bathroom etc. I went inside to use the restroom which was not long at all but it was on the other side of the rest area and as I came back outside I saw the bus pull away and could not get it to stop.**Everything I had was still on the bus and I was assured by customer service that it would be waiting for me when I arrived in DC and to just check in with the staff there once I got to DC which was only * hours later bc they got me picked pick me up on a separate bus that was going from Philly to DC.**By the time I arrived however there are no employees to be found and there was no bag to be found in any attempts since then to get my belongings back have not been successful.