RCS Group Don't Care about Customers

I am receiving someone elses statement and have never received one of my own. How do I know if someone isnt making ********** purchases on my Makro card. I have phoned in, sent emails, sent copies of my ID and signature samples. I answer security questions but I cant get them right because my customer details are linked to another account. Why doesn't RCS take this complaint seriously. Almost a year now and still no statement.