Unauthorized ********** activities by STANDARD BANK POWER CURVE and Credit checks

There are a number of unknown credit checks/hard enquiries that have been recently done on my profile without my consent and new account openings. The record show that they were done by STD BANK - MASTER CARD and STANDARD BANK POWERCURVE. I don't know what they are doing this for because I have not app**** for any loans with them recently or opened any new accounts. 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.