Airtel — money fraud don't get back

Hello sir/mam
Mujhe parso ek call aya tha airtel ke taraf se bol rahe he aisa bol rahe the vo log mene uthaya or ghar bethe kam kar sakte he aisa bola gaya or starting me 1999 ka amt liya or mhjhe bola ki refund hoga badme firse bola 3710ka amt refund hoga dono mila ke or badme sham honeko aayi na in logone phone uthaya na kisi no se call kiya bank acc no pan no sab le liya in logo ne please help me yaar