I have an amount on my credit card which do not know what it is for. Want to find out what it was

[jadbay20]

I have an unknown amount credited on my credit card.  Want to know what it was for as think it was a scam.

[twyngwyn]

Credited on your credit card???

Do you mean debited?

[sandypebbles]

That confused me to. Wondered if they 'bought' something and then changed their mind and the refund has gone back to the funding source?

No idea how we are suppose to know, let alone when two different things are said