How can I close a new credit card without effecting my credit?

I got a new credit card in the mail through an airline. I didn’t know I was applying for a card, I thought I was joining the frequent flyer club.
I have not activated the card. I thought about keeping it in a drawer for emergencies, but the interest is outrageous, so I [...]

How can I close a new credit card without effecting my credit?

I got a new credit card in the mail through an airline. I didn’t know I was applying for a card, I thought I was joining the frequent flyer club.
I have not activated the card. I thought about keeping it in a drawer for emergencies, but the interest is outrageous, so I [...]