No telephone company, or any agent or officer thereof, shall, directly or indirectly, in any manner, knowingly or willfully, charge, demand, collect, or receive from any person, firm, or corporation, a greater or less compensation for any intrastate service rendered or to be rendered by it than it charges, demands, collects, or receives from any other firm, person, or corporation for a like and contemporaneous intrastate service under similar circumstances.
Minn. Stat. § 237.09
(5292) 1915 c 152 s 7; 1995 c 156 s 3, 25; 2003 c 97 s 2