Member States shall ensure that adequate and effective means exist to ensure compliance with this Directive in the interests of consumers.

The means referred to in paragraph 1 shall include provisions whereby one or more of the following bodies, as determined by national law, may take action in accordance with national law before the courts or competent administrative bodies to ensure that the national provisions for the implementation of this Directive are applied:

Member States shall take the measures necessary to ensure that operators and suppliers of means of distance communication put an end to practices that have been declared to be contrary to this Directive, on the basis of a judicial decision, an administrative decision or a decision issued by a supervisory authority notified to them, where those operators or suppliers are in a position to do so.