Cash App complaint: Hacked and Robbed

My cash app was hacked and robbed while my phone sat next to me at home. I received a message from cash app that for my protection they was sending money i sent to a unknown person back to my bank account. I immediately opened my cash app to see that someone had made it seem like i sent them 12 transactions in 24 minutes adding up to 5000 dollars. I burst into tears and called my bank. They shut down my card but the damage was done. I have been emailing cash app and they told me its nothing they can do and i could just request my money back from the person who stole it. As i research I’m seeing this didn’t just start with me. Why is this app able to still be in business if they wont protect their consumers. I just don’t understand why are they not responsible for allowing those huge transactions back to back without ation. I feel helpless.