Optimum InfoSystem Software Developer interview questions

First round: Face 2 Face in chennai perungudi office. I have successfully cleared that and done with HR interview. It was fine. They told they will send the offer letter. 10 days passed and they called me and told there is some other interview with their client, i need to take that. Second Round: cleared another F2F in Standard Chatered office in karappakkam. Got good feed back from there as well. After all discussions, i called the contact person Mrs. Valliammai from optimum to know further steps. She is not responding to me. Before that they have called frequently and gave some false statements. And the consultancy called Gaia consulting and solution (gcs) - Deepika is arranged the interview with optimum initially. I tried to calling her as well. No response. I lost my patience. Totally i wasted my time with Optimum. I had two levels interviews in week days only. They do not know the ethics and not reslonding. Its simply waste.