Now Munnik Basson Dagama Inc (MBD) is using FNB to attempt to **** me about the loan I dont know

Why am I receiving sms from Munnik Basson Dagama Inc for the loan account that I don't have with you, How do you share my personal details without my consent. I am very disappointed that ******** like MBD Inc can just use your name to attempt to de***** me. This is one of many sms I have received from MBD Inc regarding unpaid account with stores I don't even know, why are they doing it I don't know but it is ******* to share my personal information with anyone without my consent, POPIA says so, please rectify this