on 12-10-2022 07:49 AM
Did you actually read the t&c you ticked as reading when you signed up to get the voucher?
Where you agreed to the monthly fee of $19
Which you will charged each month until you cancel
They are allowed to do it because you authorised them to do so
Again… Read this thread; it includes information about how to cancel.
In that thread, I have posted the terms & conditions so that you can see to what folly you signed up. I also quote exactly what you need to do to unsubscribe and thus how to stop being charged.