Transactions attempted without subscription

I have been getting notifications of different amounts trying to be debited from my account. One amount is R1449.99 and R639.99 with reference apple bill. I don’t have any other subscriptions besides iCloud costing r59.99 per month. I did contact Istore and no one seemed to help me. I blocked my card and went to my bank and requested a new card and these payments are still being attempted to be collected from my account. How did my account details get shared without my permission. I would never recommend anyone purchasing a phone from Istore they ***** vulnerable peoples money and they share your personal details.