Wittybrains Software Technologies Software Trainee interview questions

They took 3 process 1st are aptitude which are pen paper based 2nd is F2F technical 3rd is again f2f technical but level is difficult 4th is final hr round. They told me to sign a bond of 15 months and I will have to submit my all original documents or blank cheque. I don't think anyone will submit blank cheque and if you are fresher and going to pass in current year so you don't have all semester results so if you are fresher and you can't submit blank cheque then don't go for it.