Ind. Code § 8-1-2-106
It is a Class B infraction for a person knowingly to solicit, accept, or receive any rebate, concession, or discrimination in respect to any service in or affecting or relating to any public utility or for any service in connection therewith, whereby any such service is rendered free or at a less rate than that named in the published schedules and tariffs in force as provided herein, or whereby any service or advantage is received other than is herein specified.
Formerly: Acts 1913, c.76, s.115. As amended by Acts 1978, P.L.2, SEC.805.