Core Points - The article highlights four types of phone numbers that should not be answered to avoid potential financial loss due to scams. Group 1: Phone Number Types - "400" numbers are typically used by companies for customer service and are not used to make calls; receiving such a call may indicate a scam [1] - "00" or "+" prefixed numbers are international calls; if there are no overseas contacts, these calls are likely scams [2] - "95" prefixed numbers are used by major companies in various industries for customer service; however, calls longer than six digits should be avoided as they may be scams [4] - "1069" prefixed numbers are associated with non-commercial SMS services; caution is advised when receiving messages from these numbers, especially if they contain links [5] Group 2: Recommended Actions - It is advised not to answer, respond to, or click on links from the aforementioned phone numbers [8]