Why did Sai Baba refuse to give any money to the family of four from the Ramdasi sect?

This question is based on an incorrect premise. The source material from Chapter 29 actually states that Sai Baba did give money to this family. A group of four—a man with his mother-in-law, wife, and daughter—came for darshan, and their tradition was of the Ramdasi sect. Far from being refused, verse 12 explicitly notes, 'Baba also gave them eight rupees and eight annas, as pleased their minds.' This act demonstrates Baba's compassion and his unpredictable grace, as the chapter also mentions he would sometimes send people away empty-handed, but this was not the case for this particular group.