However, it should be noted that the validity period of oral loss reporting is generally about 5- 15 days (different banks have different regulations). If you don't go to the bank to formally report the loss after the expiration of the validity period, it will automatically become invalid, but you can report the loss orally many times. After reporting the loss orally by telephone, the cardholder also needs to go to the counter to formally report the loss, and then reissue a new card.