S.D. Codified Laws § 49-11-6
No court or judge may issue a restraining order, temporary injunction, or mesne process described in § 49-11-5 except upon the condition, to be made a condition precedent, that during the pendency of such litigation the common carrier, public utility, or public service corporation upon whose application the restraining order, temporary injunction, or other mesne process was sought must deliver to every patron, firm, person, association or corporation from whom it will exact or receive a rate or charge in excess of the rate or charge fixed in such law or order, resolution, or ordinance, when demanded, a coupon or ticket showing the rate or charge exacted and paid, the total amount collected and what for, the rate or charge fixed in the law, order, resolution, or ordinance, and the amount which would have been collected if the operation of such law, order, resolution or ordinance had not been stayed, suspended, or enjoined, and the amount of money to be refunded if the rates or charges fixed in such law, order, resolution or ordinance are finally be held to be legal and valid.
The violation of such judicial order, this section, or a Public Utilities Commission order issued pursuant to this section by a common carrier, public service corporation, or other public utility subject to this title or by an officer, agent or employee of such companies is a Class 2 misdemeanor.
SDCL 49-11-6