Case C-215/21: Judgment of the Court (Ninth Chamber) of 22 September 2022 (request for a preliminary ruling from the Juzgado de Primera Instancia no 2 de Las Palmas de Gran Canaria — Spain) — Zulima v Servicios prescriptor y medios de pagos EFC SAU (Reference for a preliminary ruling — Unfair terms in consumer contracts — Revolving credit agreement — Unfairness of the term relating to the rate of remunerative interest — Action brought by a consumer for a declaration that that agreement is void — Satisfaction of that consumer’s claims out of court — Costs incurred having to be borne by the consumer — Principle of effectiveness — National legislation capable of dissuading the consumer from exercising the rights conferred by Directive 93/13/EEC)