(1) Why, with reference to cell phone charges that are levied after the conclusion of a contract in which the capital cost of a free or subsidised handset has been amortised and another contract with another free or subsidised handset is not entered into, are post-contract cell phone call rates not required to be lowered to reflect the lower costs of the service provider; (2) whether the levying of unchanged charges will be investigated as unfair trading practice; if not, why not; if so, what are the relevant details; (3) whether this standard practice by all service providers will be investigated as collusive and anti-competitive behaviour; if not, why not; if so, what are the relevant details?