The pop superstar had recently parted ways with her longterm fitness trainer Tracy Anderson saying that she wanted to try a new method of working out, reports contactmusic.com.
Madonna's plan to hire Bikram Yoga inventor Bikram Choudhury went awry when the yoga guru turned down her request accusing her of being too temperamental.
"Madonna came to me and asked for private lessons. I told her that if you want to learn from me, then you have to come to my classes. You have to leave your ego behind," said Choudhury.
"If you disagree with her (Madonna), you are immediately blacklisted," he added.
Choudhury insisted none of his other celebrity clients, including George Clooney, Jessica Simpson and Jim Carrey have ever objected to his methods.