Amzn Mktp Us *m89bf0gv2 — charge on my visa

I have a 7.31 charge on my visa fromAMzn mktp reference # 24692168304100106940371. i have no idea what these charges are for. usually there is a phone to call to clarify charges. this item has no phone #. perhaps i do owe the charges but i need to know what for. the country India is shown up here and makes me wonder if this is not some kind of a scam.