[i assume the card you got was some kind of promotion. and stuff like this get taken back all the time, if a service give you something for free and they take it back later for whatever reason, you can't call it a scam, because they owe you nothing as you paid nothing. you leave a bad review and you move on.
When they give it to use mine they can't get it back as it is my own. By the by if they would take it back by saying their promotion not working or something like that and they need to take it back then I would not mind. The important factor to me is that:
They would block after 5 decline but they have charged me 6 times for the decline. Even after the the deletion (after the thread was created they declined the payment) if the card has been deleted then how they can decline they would not show it anymore. Now how I can know how many times declines happened before the deletion? And there is no terms regarding the deletion. At the same time, they have not sent me any email about the deletion of the card.