SDCL § 49-31-31: Contact by telephone or other device--Threatening, harassing, or misleading contacts--Penalty.

It is a Class 1 misdemeanor for a person to use a telephone or other electronic communication device for any of the following purposes:

(1) To contact another person with intent to terrorize, intimidate, threaten, harass, or annoy such person by using obscene or lewd language or by suggesting a lewd or lascivious act;

(2) To contact another person with intent to threaten to inflict physical harm or injury to any person or property;

(3) To contact another person with intent to extort money or other things of value;

(4) To contact another person with intent to disturb that person by repeated anonymous telephone calls or intentionally failing to replace the receiver or disengage the telephone connection; or

(5) Except as allowed in § 49-31-31.2, to contact or to attempt to contact another person and, in so doing, intentionally cause to be displayed as caller identification, a fictitious or misleading name or telephone number:

(a) To defraud, cause harm, or wrongfully obtain anything of value from another person; or

(b) Of another person who has not granted the person the right to display that other person's name or phone number, as applicable.

It is a Class 1 misdemeanor for a person to knowingly permit a telephone or other electronic communication device under his or her control to be used for a purpose prohibited by this section.