***** my bank account

It was November 2018 when I try to advertise my company on Facebook business page. I try with small amount like R30 to see if I can get new customers. Unfortunately I never have. I used my bank card details. I was surprised and shocked when I received notification on face book where it told me thank you for the purchase online your add is running. It was 23 December. When I check my account I realize R29.89 gonna. With company called Online Purchase: Facebk R4q99kjwu2 Fb.me/ads (Card 8432) Long Description FACEBK R4Q99KJWU2 fb.me/ads IRIE

How this people go to my Account to ***** it. Because I never ever give them any authorization on my bank account. I’m worried if this people knows to ***** my account it will be worse. I need them to bring my money back. I’m going to advise people about this ***** and public to all social media and social network