Prosecution Evidence going without summon

I was employed in Interglobe Technologies a Travel call center in 2013 and I left the company in 2013 due to contractual base job .There was a employee who used my ID and password and made a booking which I was not aware of I gave him my ID and password on good faith but he misused my ID in a fraudlent activity.He used ID of other 5 employees in same fraud activity.Case was again registered in 2015 and one day a police officer came to my house and told me that there is a summon for you that you have to provide your evidence in court.I went to the court on 05.10.2015 for my evidence but the accused person was not there.So judge gave another date of 07.01.2016 and same police officer gave me summon for that date.I went again on 07.01.2016 to provide my evidence on that day accused person was there with his lawyer.His lawyer cross examined me and took my statement and I signed on my statement and I conformed from judge that now I have given my evidence so now I not need to come again.Judge told me yes you not need to come.Other employees were not present at any hearing after NBW were issued against them but no other PW were present from 2016 to 2017 .Now after a year on 05.04.2017 same police officer called me and told me that you have to come for your evidence.I told him that I have given evidence earlier.But he told me that you have to give your evidence if not why we should call you. Surprisingly I have not received any summon for my Peshi in court on 10.04.2017 and next date is on 15.05.2017.He just called me told me that you have your evidence.What should I do in this situation. I am working guy and I cannot take leave from my office every time for the case hearing.Please help me with this case.Accused has been charged under section I.P.C 408/419/420 and he is on bail and the case in District and Session Court Complex,Gurgaon.