I want to remove the card which I have added to my account right now

See the Apple Support article(s) below.

Apple ID without a credit card      

Apple ID - If you can‘t choose None when you edit your Apple ID payment information.       

Please start your own discussion. Trying to answer several problems in one discussion gets confusing for everyone. A new post would be much more visible. 

You didn't provide enough information about what happened to comment on your identity being compromised. Why do you think it might be compromised?

I wan to play amount us when it says your playing an older version

I did not send the original message above . Please comment that my identity has not been compromised.