DS7 fuel filler flap locked, does not open....out of benzine

My 2018 DS7 has door lock problems after i took it back from the service…and the other day when my wife stopped in the gas station to get gasoline she found out that the benzine filling cap is locked and it’s not possible to open.
I wrote to the service and they don’t care.
Some different brand cars have emergency opening of the fuel filling flap from the trunk.

Does anyone know if this car has that also, from the trunk ?
I checked but could not see.

By the way, while looking at google i saw that there is a technical bulletin to change the locking mechanism of the fuel filling flap of DS7.
So early or late it can happen to anyone, if it’s not fixed.