Animal Removal is the Search the List category for this.
And you should include in their scope finding and sealing up any openings letting them get up there - generally plugging openings with metal screening (which should be hardware cloth, not window screening - they can chew through that easily) they will do. If something like missing siding or roofing or roof vent cap or such then you may need to get a roofer or siding contractor in do take care of that. Missing eave/soffit screening Siding contractor or Handyman.