It is not difficult to sue the bank. You can call the bank on the back of the card, tell the customer service staff that you received the card without applying, and ask the bank to cancel the card.

As for suing the bank, legally speaking, you need to cause actual losses to win the bank, but you don't owe money on this card, so there is no need to sue the bank!

Supplementary answer: The so-called crime of extortion refers to the act of extorting public or private property by threatening or coercing the victim for the purpose of illegal possession. You think that the bank has caused you losses and asked the bank for compensation, not for the purpose of illegal possession, so it does not constitute extortion; Besides, do you have the ability to threaten or blackmail banks? More like a bank blackmailing you, hehe.