130 Telecommunications Act 2005 2005, No.20 (2) Service providers shall provide customers with invoices: (a) in writing (although invoices may be provided electronically if the customer consents); (b) on a regular basis; (c) in a plain and simple format; (d) that provide accurate information on the services provided and the amounts due for each service; (e) that clearly indicate the method of calculation of tariffs for any service for which invoices are based on the length of calls or other measure of usage; and (f) that comply with this Act and any regulations, rules and orders dealing with customer invoices. (3) Service providers shall retain accurate records of all customer invoices for a period of at least 6 months from the billing date and make such records available to the Regulator upon request. (4) Where the Regulator has a concern about billing systems or practices, the Regulator may require service providers to public information on billing systems or practices or to take such other steps relating to a service provider‟s billing systems or practices as the Regulator may consider appropriate. (5) No service provider shall make, or cause to be made, any false or misleading claim or suggestion regarding: (a) the availability, price or quality of the service provider‟s telecommunications services or equipment; or (b) the telecommunications services or equipment of another service provider. (6) For the purposes of section 47(5), a claim or suggestion is misleading if, at the time the claim or suggestion was made, the service provider knew or reasonably ought to have known that such claim or suggestion was false or misleading in any material respect or that such claim or suggestion was reasonably likely to confuse or mislead the person to whom the claim or suggestion was made. (7) The Regulatory may issue an order to regulate or prohibit the use by any person, whether or not that person is a