Bees in the wall at the end of my garden

Seen a lot of bumble bees flying into a small pipe in the wall at the end of my garden. I assume there must be a nest/hive in there. Was thinking of calling the pest control people out to deal with it as don't really fancy getting stung and they're always getting in the house and stuck in the closed windows (stupid flying insect style).



Thing is keep reading we need to start being nice to bees.



Any advice?