The post office has lost my package and said it was delivered.

After complaining, they denied my complain and sent me a message asking me to send them the proof that I have not received the package.

How the hell am I supposed to do that?

6 years in south of Paris, and I lost only 2 packages. 8 months back in Antibes and this is the 5th package that "got lost".
#France #Laposte #Antibes #WTF