Some people believe that angels are real and dwell on Earth to help, helpers of humanity! Some people call them light beings, plasma beings or enlightened beings.
Maybe angels exist, maybe they provide a free service (unselfish and unconditional) but maybe they don't do a good job (sloppy job, even if they're trying to help) or they are just untrustworthy altogether (pretending to help (beware of pretending), secret agenda).