Compare prices using well-known retailers and check reviews, but be cautious of offers that seem far cheaper than usual or demand urgent payment. Never share your password, PIN or one-time banking code, and verify unexpected messages by contacting the organisation through its official website or phone number. Before using an investment, loan or financial service, check the firm on the FCA Register and its warnings list. If you think you have been scammed, contact your bank immediately and report it to Action Fraud; Citizens Advice can also provide guidance.