If the court receives any verbal or written communication from a protected person alleging that a guardian or conservator is abusing or neglecting the protected person or is engaging in self-dealing with respect to the protected person's property, or the guardianship or conservatorship is no longer necessary and should be terminated, and the communication contains credible and substantial evidence, which in context of the entire record, supports the allegation, the court must treat the communication as a petition under § 29A-5-504.
SDCL 29A-5-428