Hari Prakash se...Hari Prasad?

Is it just me or wasn't it Hari Prakash not Prasad like Shyam called him yesterday? Or are there like two families in the RM? THe Prakash's and the Prasad's? THen why do they have both have children named Hari? Is it just me getting confused or is this true? Cause if it is...the RM owners do not know their own servants,,,,,,