Blacklisted

Hi Peter I've just recently discovered I've been blacklisted this company appears on my credit I don't know them apparently I've opened an account with them in 2017 a year I was unemployed so how could I have opened whatever account with them I just started working in 2022 since 2017 I've been unemployed stating I'm owing and amount of R4500 for what I don't even know I don't even know what business this company is running