Standard Thank You Card Messages For Baby Showers Unknown CREDIT On My Credit Card Statement?

Unknown CREDIT on my credit card statement? - standard thank you card messages for baby showers

Hello, I wanted to see if someone can please advise.

I just changed my credit card and there is an unknown EUR 4.66 credit with a code number and standard telephone, that the description and the name of a company I've ever heard. I called the number and there is no reference to the only company with a recorded message that the number changed since 0870th

Could a type of fraud? Should I credit my bank is an unknown place Uknown debit?

Thank you very much.