1st round is okay but not selected for final round/ there is only 2 round 1st is managerial round and 2nd one is HR round. There is only 2 round and the job is all about selling their Software. 4 months internship and then they will decide that you will be hire or fire. if they don't want to hire after 4 months of unpaid internship, then its a waste 4 months for you.

There are 3 round interview- First Basic round(about yourself, qualifications or family background ) with HR, secound interview with sales head its a technical round to check your confidence level and skill , thired salary discussion with HR.