To those saying they lost nothing you are dead wrong. I had written out a long explanation about why this absolutely has cost them a lot of money but it got lost when I tried to login so here goes again.
Chargebacks cost money, the charge is passed on from the payment processor to the seller, this fee can be anywhere from $15 to $30 depending on the institution that the chargeback originates from, amount of chargebacks and the payment processor being used.
So multiply 1341 by $25 (which, sadly, is a very realistic figure for a chargeback fee) and you get ~$33k in chargeback fees alone. Then factor in the server costs for serving these customers then the support costs, believe it or not users need lots of support for the simplest of things, and you are easily at the $30k figure of LOSSES.
I know some people like to live in a fairytale world where developers all work for free and a digital product is not worth anything but believe it or not support costs lots of money, it takes money to server customers in the first place, it costs a hell of a lot of time and money to get the product out there in the first place. Chagebacks are an unnecessary cost that is incurred on top of the refund so they do cost the company.
1341 chargebacks would be enough to sink most small companies so it is not just a simple case of kill the accounts. Things in the real world cost money, setting up an account costs money, providing support to those that cannot evenfigure out what is right in front of them costs much more money than most realise, killing an account costs money but most of all the chargebacks themselves cost a hell of a lot of money.