We paid $120AUD for an "upgrade" that was not an upgrade. When checking in our bags for our flight home to Brisbane, both my partner and myself explained we needed to sleep, and asked for an upgrade. We paid for something we were assured would be better. This was only for the Bangkok to Brisbane leg of the journey. Upon boarding in Bangkok, we realised we were no longer in the Quiet Zone (our original seats being 10J & 10K), and asked to go back to the Quiet Zone. We produced our receipt of payment for this "upgrade" and said we would like to be back there, and would ask for a refund upon our arrival home. We were told to wait so the flight attendant may enquire. Three times I asked if we could move back to the Quiet Zone. This did not happen. The Flight Attendant did not return our receipt either. Another point to note is that a gentleman sitting in the Hot Seat (next to us), also asked to go to the Quiet Zone. Ironically, he paid $30AUD to move there, when we had unknowingly paid $120AUD to move from there… supposedly for an upgrade! This apparent charging people to upgrade is not consistent. We were charged $120 to move OUT OF THE QUIET ZONE and into "better seats", when our neighbour in the so-called better seats, paid $30 to move TO our original choice of seats. We have requested a refund of $120AUD for this upgrade and instead have been paid a credit. While considering this as an option, our apparent 7 days to act upon this offer has expired. All we are asking is a refund for an upgrade that was very obviously NOT an upgrade. (This proven by the man sitting in the seat next to us, paying to be "upgraded") This refund is $120AUD