Section 756.512 - Notice of complaint to defendant; responsive pleadings; setting cause for hearing(1) The Public Utility Commission shall serve a copy of the complaint upon the defendant, and shall give the defendant at least 10 days within which to respond to the complaint. Within the time so fixed, or such further time as the commission shall fix, the defendant shall file an answer to the complaint, taking issue on such parts of the complaint as the defendant desires and setting forth such additional matter as shall be pertinent to the matter in controversy. Such additional matter shall be deemed denied without the filing of any other pleading by the complainant. After the filing of the answer the commission shall set the matter for hearing, giving the defendant at least 10 days' written notice of the time and place of the hearing, unless the commission for good reason stated in the notice, fixes a shorter time. Amendment of any answer may be permitted by order of the commission.(2) If the defendant fails to file a responsive pleading or otherwise appear within the time prescribed in subsection (1) of this section, or if the responsive pleading filed raises no issue of law or fact, the commission may act on the complaint without a hearing.