I changed the name of your post Gary - MAYBE someone LOCAL to you will spot the name of your town.
I just offer one word - and I could be wrong here, but you said you "I know how to remain calm and slow in such situations but I doubt that is enough" Even if that is so (and something tells me you you could handle this better than most - ONCE you start pulling comb out of a constructed hive, all heck breaks loose and you will be the target of many a nasty and protective worker.
You can go from zero to 5 thousand bees in 0 point 0 seconds and it's impossible to react to that in a good way.
I hope someone here can help, I strongly suggest you notify the local police and fire departments, they may have local beekeepers on file or thumb-tacked to a post-it board and you could save yourself a lot of pain, or worse case scenario - the unregrettable death of a hive.
Of course (and I'll read back) we haven't established if these are indeed honeybee. I wouldn't want to tackle ANY OTHER BEE except to destroy them, but that 's just me.
PS... whether this is a one time stop or not, welcome to the forum. If you garden, or have fruit bearing trees, etc., this still may be a good place to return to from time to time - lots of non-beekeeping topics here also.
Best wishes, and let us know what happens, no matter what. Good luck.