MetroAccess complaint: driver refused to let me on the van

My pick up window was scheduled 9:21 to 9:51 but pick up request 9:30am March 28th well I was getting ready to go down to wait for the cab at 9:15 but I ended up having to poop. By the time i finished pooping i got a call from dispatch saying cab is waiting for me. I had to wait for elevator to pick me up from 3rd floor to go outside. By the time i got outside i saw the driver close door to get ready to leave. I knock on window the driver lady refused to let me on the van. I said I am here now i had to POOP. the driver refused to let me on. EXCUSE ME I WAS POOPING AT 9:15 I HURRIED DOWN AT 9:30 AT MY PICK UP REQUST TIME.. so why the driver refused to let me on the bus the.. .. THAT WAS NOT RIGHT I WAS POOPING FOR GOD SAKE i ahd to go to the bathroom and i i saw my cab driver waiting outside . i knocked on window to let driver know i have arrived. but the driver REFUSED TO LET ME ON THE VAN.. it was only 9:30!!! exact pick up time . wha tis the matter with the driver?? that is not right. THAT IS VERY WRONG TO HAVE A 5 MINUTE WAITING time that NOT RIGHT… you need to tell drivers to wait 15 min waitig time until the end of the waiting time not on the request time.