16.1 This contract may Quand modified prior a formal Raccourci by LYCA Amovible to the customer within one (1) month in advance à cause; MMS; SMS, e-Courrier or other available means, when there is a troc in the Bienfait, its conditions and ad hoc regulations, or a permutation in the https://www.becharge.be/be-nl/Kopen/herladen-Lycamobile-1-616