State Bank Of India [SBI] — credit card threat

Address:

New Delhi, Delhi, 110055

Me and and my relatives getting call from sbi card department regarding payment. I already told them i will restart the payment from new year. They keep calling my relatives and know all the personal details of my relatives and their bank accounts telling them to pay my debt. They calling from [protected], [protected]. How the sbi card department getting the data from illegal sources. After this one of my relative get the call asking his card number.