The Consumer Protection Board has taken mobile phone operator Elisa to court over e-bill fees.
The aim is to get the money charged for bills sent by email back for customers, the Board told ETV on Thursday.
The Board said customers should have the possibility of receiving e-bills without an additional charge.
Elisa said customers can log into their online accounts and see their bills for free.
At the beginning of the year the company instituted a 60-cent surcharge for bills sent via e-mail.