This is the best way, at least that is what I have found. But you need a bit of time to do it. Write a letter to the offending bank, if possible in print, make a copy of it, take it to the offending bank, yourself, with the credit card, make sure it is destroyed and get a confirmation of the complaint recieved. And what do you write in the complaint? Write that you are not liable for any misuse of any other cards sent to you unless you apply in writing. If they do that, you are not liable to any possible misuse. Also, remember to note down the name of the person along with the employee id who recieves your complaint. Also, mention that you will not appear in any court or independent arbitrator, regarding cards sent without your express approval. The card issueing authority has to bear all expenses is you have to do so, including loss of pay if you miss office, for which they should not charge you later in any way. But most important, KEEP THE ACKNOWLEDGEMENT COPY WITH YOU SAFELY AND SECURELY so that you can produce it anytime.