I Keep Seeing Sneaky Apple Purchases, Unauthorized Transactions on My Bill

 just found out that there were some sneaky Apple purchases on my mobile bill.  They added up to around 750-780 TL. Can you help me out with this? even though I didn't actually say yes to these transactions, they still happened after I got this Apple code on 11.11.2023. I deleted it right away because I didn't buy anything myself. I told Türk Telekom about the problem and they were like, "Yeah, someone's been using your phone number to make purchases." tried reaching out to Apple, but they weren't much help. They said they couldn't see the transactions and told me to check my account instead.  asked Apple for a refund, but they straight-up said no. Türk Telekom and Apple didn't say anything about how to keep myself safe from more sneaky transactions. I'm not sure where the confirmation message on my phone came from or how my phone number got compromised. So, I turned off mobile payments, but I'm not sure if this problem will keep happening.