he planned throwing the phone down there- knowing arnav wud fix it and call kushi. so if he knew that was gonna happen - why didnt he go listen to the conversation. maybe he knew she wud hear the bells and train and wanted to see if she wud go looking in that type of place or go to the fake mr roy. and does he really expect her to tell him of all people that arnav called - they r not even working together yet.
also, why doesnt kushi go to the police and get them to track that number down.
loving kushis new plan, but dont get why she has to pair up with him in mondays epi. surely shyam wud realise that if she really did hate them both, she wudnt work with him in getting her badla.