You are paying a significant amount of money for the handling agent to make sure everything goes smoothly. And if it does not make your you complain vociferously.
I will indeed complain if its not smooth....certainly since having been flying in the US, where I got stuck overnight at Gainesville once due to a major thunderstorm the FBO delt with everything for free (which I admit is GA in America for you
), I take a very dim view of people who take your money and then don't deliver.