Madurai scam help me ⚠️⚠️

So guys my friends was purchasing a Apple iPhone from a dealer like he’s selling mobile in black so already he purchased two mobiles from him so he went for third phone to buy and there he saw iPhone 16 pro max although the condition was good he didn’t showed interest on that mobile so he refused and asked for payment back advance payment they said they will go to nearby atm and return but they didn’t so they said until you give that money back give your bike key and bike with me so they also did but after some time they didn’t pick his call so is there Anyother way to track the location of theirs or any other way to track them