i think that palaash is the one calling sehgal house so many times, and when kunal finds out that the blank call is coming from nimmo's basti, then he will think its nimmo who is calling for him:P,and i also think palaash maybe kunals brother dont ask me how that happen, its just a guess.
I think palash must be a repoter. Who is undercover trying to find out the secret he knows about sehgal family. That's why he is being friendly with nimmo, and living in the same neighborhood.
You could be right...so all three sisters connected to Seigal House..ufff đ There are so many other families, why did all three sisters find only the Seigals?