Tata Consultancy Services — BGC Rejection

I got an offer from TCS and they provided joining date. On the day of joining, I did induction and all but I did not received employee ID. So I asked to recruitment (TCS Employee). She connected to BGC team and said your BGC is negative. I asked for reason, they said you worked in one company and not listed here so your BGC is negative. I provided clarification and all but they are saying now we can not proceed your candidature. Already I resigned and served notice period from current organization. Now I have not any Job. They ruined my career totally.