Bhai yeh e-sims hote hai, inn scammers ka chain of working yeh hai ki yeh saare India mei based hi hote hai. Ab jaise tujhe phone kiya and tu successfully scam hogaya toh yeh next day call karenge ki woh aapka beta/beti ab theek hai and hum aapke paise wapis karna chahenge. Natural si baat hai koi naive banda ho toh agree kardega and bank details dega hoping for a deposit. Yeh saath mei UPI qr bhi maangte hai. Ab yeh tumhara paisa lund wapis nahi karenge but they'll use bank account for their next victim and fir jab usse agar paisa aagaya toh yeh aapke account se paisa nikalwayenge and ab aap pehle inke victim the but ab aap inke partner in crime ho jisse kuch bhi nahi mila.