Some beekeeper would be happy to come collect the swarm (for free), but he might be unable to do it because of the location. Ask around you, in the village/town if anyone knows an "apiculteur". Or Google "apiculteur" along with the name of your "département".
I don't think the firemen will do it. They are likely to redirect you to an expensive private company, as they don't do this kind of jobs anymore.
BUT I agree with everybody here on the uselessness of destroying a nest of peacefull animals, that moreover are an endangered species that needs our help.
In my grandfather house, bees have been living in an unused chimney for at least eighty years. My father was born there, I have lived there, all the children of the family have spent vacations there and nobody ever had any problem with these animals. We knew they were there, but they were so quiet that they were out of our mind.
Over the years, we had to destroy wasps nests, because they are known to be agressive, and also hornets nests, because we were afraid of their painful sting (although in Germany they are considered non agressive). But we never, even for a moment, think of dislodging the bees.
Sometimes (once every ten years) we called a local bee keeper to come pick up a swarm that had left the colony. But it was only for the sake of being helpful to someone. Most of the times, we never knew when a swarm had decided to leave.
If you don't know bees and are afraid of them, you need to know that they will never attack you like the wasps do (unless you are flailing wildly less than one meter far from their nest).
In our garden, there is small tree, quite low, that is always full of bees at a time of the summer. Well, that's where we chose to set our garden table, because of the shade. We are used to have lunch there, but no one was ever bothered by the bees. They are busy around the flowers, not around our meals.
Wasps and hornets eat sugar and meat, and can be a problem. But bees harvest pollen only. They might be interested in drinking sugar water or water if they are far from their nest, but that's all.
I repeat : we never had a problem. My wife is even used to gardening very close to a lavender bush that is always full of bees. She doesn't wave at them. She minds her business and so do they. She was never stung.
Let them be. :)