- I don't know who is using my account. This card is not mine
- Yes, we see this.
- Can you change the password for me so I can use my account again?
- No, because this login was used at first not with card that you provided and after checking login history, seems like someone shared this account to you. If you bought login from second hands you need to solve this with seller.
- Can you give me the serial of the card on which my account is being used?
- No, and even you have this serial, login anyway attached to this card, so you cannot use it with another card.