Log in, go to 'Manage cards', and select the freeze option. How to Permanently Report a Lost or Stolen Card
As mentioned, the app is the gold standard for speed. It allows you to lock, report, and even order a replacement card without waiting on hold. The app also provides an immediate digital record of your report. For tech-savvy users or those in a loud public space, this is the optimal choice. report santander card lost
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