State Bank Of India [SBI] — Fraud against my name

Address: New Delhi, Delhi, 110058

From last few months sbi is calling me and abusing me for some 1.5 lac dues... Their people are so aggressive and so abusive that its hard to ecen talk to them. I never ever had a sbi credit card. I do not know how they have my personal information and my sibil score is very low bz this card shows against me in sibil and hence no bank is giving me loan. Amd i needed the loan at most but i am helpless now. Dnt know what to do and where to go. Can someone help me pls
Regards
Munish