The danger is over. It is definitely not. To understand why, we should first review the intricate procedure involved. The cancellation fax is then sent on to the issuing bank. The details of all the issuing banks are found in special manuals published by the clearing and payments associations of all the banks that issue a specific card.
Many banks share the same name or are branches of a network.
Banks with identical names can exist in Prague, Budapest and Frankfurt, or Vienna, for instance. By the time the mistake is discovered, the card is usually thoroughly abused and the financial means of the cardholder are exhausted. By the time the fax is sent, it might be no longer necessary. He has to clearly identify them and state in writing that they were not effected by him. A chargeback is a transaction disputed within the payment system.