Joined Cases F-137/12, F-138/12, F-139/12 and F-141/12: Order of the Civil Service Tribunal (Third Chamber) of 13 December 2013 — Van Oost, Ibarra de Diego, Theodoridis and Hotz v Commission (Civil service — Officials — Promotion — Certification procedure 2010-2011 — Exclusion from the list of certified officials — Amicable settlement on the initiative of the Tribunal — Time-limit for lodging a complaint — Complaint out of time — Concept of excusable error — Diligence required of a normally well-informed official — Information obtained by telephone — Proof — Inadmissibility)