Charged bill for closed alliance

So I left empty alliance to close about four months ago by emptying corporation wallet and taking a break from game.
I started playing again a couple of weeks ago. Alliance was closed as expected and yesterday I put some money into the corp wallet and soon after I got charged 8M x2
This is cause I owed that isk or something is bugged?
Thank you.

Open ticket, ask CCP, we can’t answer.