"Stole" is very misleading. Yes, their billing system had a bug and charged a bunch of customers in error. But DH handled it very well, were very transparent about what happened, refunded all the money (of course), and even went so far as to reimburse people that incurred overdraft fees.
"Even went so far as to reimburse people"!? They directly caused those people to lose money! Of course they reimbursed them; the alternative would have been to reimburse them after a slam dunk legal case.
Dress it up however you like, they took $7 million that wasn't theirs.