One of the things to notice is the link never looks right. Also let unknown numbers ring out if they leave a message it may be legit but always be careful and ask questions. But keep your phone numbers marked eg: doctors, vet, bank, people that are your contacts, family. Save your numbers to your sim card also.
Use reverse look up or similar internet check and check scam watch before you do anything. Better safe than sorry. Keep an eye on your elderly parents and friends with scams, as predicted for August tarot card of the month.
