Aw, poor doggie! Glad he's okay and will heal, but poor doggie! I can not imagine living that close to so much 'wildlife.' Here in the US we've done a very good job of chasing/hunting much of the wildlife away (and certainly no monkeys native to North America). I have no idea what I'd do if I walked into the house and saw a monkey in the pantry.
You open the door and politely ask them to leave LOL, no seriously, don't become aggressive with them normally they leave reasonably quietly once you show them an exit.