It's such an error, and it's so easy to see how it's happened. I imagine they're rushing through orders and having to manually produce invoices without taking the time to check details.
In my field, a data breach would be catastrophic.
No response yet. I emailed them within around 20 minutes of receiving their email. Two hours later, I haven't had a response.
It's all a bit of a mess really, sadly. The products seem well made, and the overkill response of sending lots of free bags, makes it feel like they want to put things right... But the whole thing has been error after effort sadly. I hope they manage to get it sorted. They need some immediate safeguards in place for checking the invoices and evaluating how big of a breach has occurred.
Fingers crossed they managed to get it sorted.