How did Damu Anna react when he received Sai Baba's discouraging advice about his plan to earn millions?

Damu Anna was extremely disappointed when he received Baba's reply. According to chapter 25, upon reading the letter, the 'fortress of his desires crumbled' and the 'tree of hope was uprooted.' He was very crestfallen and lamented what he perceived as a missed opportunity, thinking he could have earned a lakh, put half on interest, and become a millionaire. He felt that he had caused his own harm by writing the letter and had, in his own words, 'kicked away the served plate myself.' This shows his initial reaction was one of deep regret and a sense of loss over the failed business venture.