Impossible Deliveries

I’m finding the new updates to trains intriguing but frustrated by getting multiple requests for impossible deliveries.  I’ve had at least three delivery requests that require using the SC Line 9001 train to deliver 5-7 materials.  These deliveries had between 30 minutes and 1 hour expiry times.  SC Line 9001 has a 40 minute cooldown and a capacity of only 1 cargo.  There is no way these deliveries can be completed.  I realize I can pay 10 simcash to cancel the delivery and get a new one but then you keep giving me a new delivery that is also impossible!