Question

Good morning,
People have been calling my cell phone to ask me personal information: address, credit card number, social security number, telephone, etc., they say I have a debt but do not tell me to whom I owe, or not an account number, company that is charging or amount of the debt, I have no debt but they insist on requiring the information to me, this is very annoying that this sounds like fraud and identity theft, callers not identified only say there is a debt and they need my information to verify my information and to help pay and do not sue me. I can do? as I can verify who they are to stop the calls?
Thank you.