Hello all,

On last May, I booked 2 tickets on the Pluna website for a R/T between GRU and MVD in the upcoming weeks (December). I have received immediately a confirmation by e-mail with an Amadeus booking code. Status was : Confirmed. Moreover, I had pre-assigned seats for both outbound and inbound flights.
There were paper tickets I was due to pay and pick up in GRU the day of the flight.

Today when I look into Amadeus or Pluna website, my booking is gone
Of course the flight is now full and it is impossible to book a new ticket.

Pluna is not responding to my calls at that moment.

What are my chances to get back those ticks, and how?
Any advice will be appreciated.
Thanks