Standard bank power curve enquiry each month on my report

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 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 *****ulent enquiries because I did not request them.