Apple Store Request for Refund

I just found out that my family has been using my Apple account to buy stuff without asking or telling me. I filed a claim for a refund on these unauthorized charges within the allotted 30 days but was summarily denied. I would expect better from a reputable company like Apple than this, so please fix this right away. Companies like Apple must implement robust security protocols to protect their customers' personal information and money from theft. If something like this happens, businesses need to act quickly to make things right and appease their clients. A prominent company like Apple should know better than to ignore a legitimate refund request without providing an explanation. I expect Apple to conduct a thorough investigation into this matter and offer a suitable solution without delay. A friend of mine had a similar experience with an Android-based phone, and the company fixed it right away. Apple has never disappointed me.