Horrible service from Sportscene

My sportscene account reflects transactions that were done online which I did not do. I addressed this with their customer service department and I was advised that they can't assist me. I am so upset because my credict score will be affected. I have done an affidavit confirming under oath that I know nothing about these transactions. These purchases took place in Feb 2024 for about 5000 and 4000 Store name The Groove which I don't even know. My account number *** My contact number is ***.