Used stamps exchanges.

Dear members. 2 covers came from John Lang and the post office keeps them and trying to charge me almost 70 euros. I would like to reach him to send a message and ask what is inside the envelope. Does anybody know his ID? How can I send him a message?
Nedime

Thank you Krepki and Danublus.

Hi, I can't find a member with that name. I checked 25, 50 and 100 stamps clubs.

hi Nedime
i exchanged a lot here, but i dont recall any John Lang (maybe new member). Are you sure it is for 100 stamps club? Danubius will know the answer ;)