Non-payment of stipend

I did an internship with Englishahead in july-august 2016.It was for a month after 22-25 days they said that we don't need you anymore work isn't going as planned, we need to do changes in planning(we were told its a startup),but certificates and payments will be given for the work done as per the joinning letter. Payment of my stipend was due in august end but CEO abhinav saral gupta said that its very rough out there and they can't pay right now and from then he is just moving the dates of payment, he gave me a cheque finally in march end dated 30/06/2017 and then it got bounced after that he said some financial issues came and started the earlier process of delay again, now he doesn't even care to reply my queries. I have all the letters and conversation with him on mail and whatsapp as well. the stipend amount is just 4300 so the lawyer i went to suggested that anything can't be done and if i take any steps it would cost me more, but i don't want to let him go and give him confidence to do this with others as well in future neither i want to lose more money because of this so what can i do now?