SBSA LOAN 2 and STANDARD BANK POWERCURVE unauthorized credit enquiries

There are a number of unknown credit checks that have been recently done on my profile without my consent. The record show that they were done by SBSA LOAN 2 and STANDARD BANK POWERCURVE. I don't know what they are doing this for because I do not bank with them and I have never app**** for any loans with them. This is damaging my credit score as it goes down each time they make these enquiries. Please stop it, these are ********** enquiries because I did not request them.