There is a good chance they will get rid of your bees for free. Why? Because in the last few years wild honey bee populations have dwindled down to almost 3% of their estimated original population. Before resorting to bee killer, steps should be taken to remove the bees peacefully, without chemicals. Ask around your local co-op; someone is bound to know a beekeeper."
How to Get Rid of Bees
It's true that you should contact a local beekeeper. BUT they probably won't do it for free, unless it's a really easy job. Getting bees out of buildings is very difficult and time consuming for the beekeeper. Many times, the bees won't survive anyway. Most beekeepers won't even bother with this type of difficult situation, for good reason. It's a waste of their time. Expect to pay good money for good work.