All such persons, firms, companies or corporations described in Section 630.020 hereof, shall file with the City Clerk of the City of Warson Woods on or before the thirtieth (30th) day after the end of each calendar month, a verified statement of the local exchange gross receipts of such person, firm, company or corporation derived from the furnishing of telephone service to customers within the City during the preceding month. Such person, firm, company or corporation shall at the time of such statement, pay to the Collector nine percent (9%) of such gross receipts as shown by such statement.
