For the Revocation contact QuoVadis through the QuoVadis Helpline or by the menu item "retract" in the SuisseID shop.
QuoVadis performs the necessary steps for the Revocation. Similar to the procedure in case of loss of the bank or credit card, your SuisseID is immediately locked.
Online Revocation: www.quovadis.ch/revocation
0900 008 007 (For technical support, 2.95/min, from the 3rd minute)