1st is an HR interview through Phone call, the whole interview will be in English because the job role is international voice process. The HR will ask basic questions and then will inform you if you are selected for the next round which is assesment. There are two assessments which checks the language proficiency, numerical ability etc. After scoring 60% for the first you will have the second one. After scoring 60% for the second assessment the next round will be through video call with the HR, communication skills and other skills including numerical ability will be checked in that too. The final round will be the face to face interview, the same process will continue there too. Make sure to have good answers that can satisfy the HR and have a good knowledge about the company and job role.