Unauthorized Apple Pay Cash Withdrawal?

I just discovered an Apple Pay Cash Withdrawal in the amount of $400.00 and on my bank statement it says ‘Apple Pay Cash card withdrawal 1 infiniteloop Ca’ I am not sure why Apple cash would charge me and to my knowledge, I didn’t authorize this withdrawal. .I have checked my transaction list on Apple Pay, and I am not finding this charge. If someone could bring light to this charge, it would be great.