Shein Unauthorized charge

I got a shein unauthorized charge on my debit card for like $280 I checked my account to see if it was from my own shein app but there was no charge. I'm always careful with my bank details but idk how this happened. I called chime they said they are not able to do anything until the charge isn't pending anymore I froze my cards and changed everything. They told me more than likely they will refund the money but I'm like so stressed about it now. Has this happened to anyone before ?