We don't do recurring payments, only a one-year or a one-month membership. At the end of that period, the membership will expire and revert to Economy Class. A review of your account shows that that's what happened.
If PayPal have offered you a recurring (subscription) payment, then they shouldn't have - and we'll need to know so that we can sort it out. Certainly we haven't been notified of getting another monthly payment. I can't check our account from here, that'll need to wait till I get home, but I very much doubt that we've taken any more money from you.
I would have expected the system to send you a
PM when your membership was about to run out, though; I'll have a look at the code responsible for that.
In the meantime, I've added a month's First Class membership to your account free of charge. You should be able to extend that at any time.
My friend and I applied for airline jobs in Australia, but they didn't Qantas.