Amar Tea interview questions

Took three round of interviews pass all of it. 2 Technical rounds, 1 HR and 1 with MD. Passed all rounds but the company is Owner driven, HR called me before 2Hrs of resigning from the then current employer to inform me that they have changed their mind to not to hire me. Because they find me incapable. Worst experience of interview ever. The employer is too hasty and is a lala company.