You actually lost the money, and only 566mil was deducted from your account when you put money to the vault. I will assign this to Ched to check the faction logs to see, why there are so much now.
maybe it both the mugger and depositor pressed deposit and mug money at the same time so the $33,480,000 went both to mugger and vault too................
I'm having a very similar issue with a bazaar sale and a faction donation occurring at the exact same time. I have a bug report open now. I donated 1mil to my faction as I sold a DP for 24.325mil. The system is showing 25.325mil leave my account with the donation but only 1mil being deposited into the faction. I believe there is a bug where same-timed events interfere.
this could be a greate way of money making... just team up with a mate and try to bank your money on time X on the same time your mate try's to mug you... 600mil = 33mil profit. I am sure you can hit the perfect time a few times a day if you practice a bit :)