few weeks ago, I have applied for Swiss Travel Club membership. They did not send me a card yet by mail, I just wrote down my number on a piece of paper.
I have lost this paper and now I cannot log in to my account. Also, i will be flying soon and I would like to use my number to put on reservation.
On Swiss' website, i can only recover PIN but it does not mention anything about if I forgot my number?
What Can I Do?