Case C-621/17: Judgment of the Court (Third Chamber) of 3 October 2019 (request for a preliminary ruling from the Kúria — Hungary) — Gyula Kiss v CIB Bank Zrt., Emil Kiss, Gyuláné Kiss (Reference for a preliminary ruling — Consumer protection — Unfair terms in consumer contracts — Directive 93/13/EEC — Article 3(1) — Assessment of the unfairness of contractual terms — Article 4(2) — Article 5 — Requirement that contractual terms be drafted in plain and intelligible language — Terms requiring the payment of costs for unspecified services)