Carrefour review: diesel 1

Dear Sirs,

During my stay in France the last week, I had to fill the tank of my car with Diesel at Carrefour Station in Cluses.
It was last Sunday August 11 at 13.37 and 13:44 that I received two messages stating that the amount of 150 Euros was removed twice (a total of 300 Euros) from my account (credit card) although I had a small Renault car which doesn't need more that 45 Euros to be completely filled.
I filled the car twice with two small amounts of money, the first at 10.5 Euros and the second almost the same amount.
I urgently need your assistance to get back my money (the 300 Euros) and I am ready to answer all your questions in this regard by writing to me either to [protected]@ndu.edu.lb or to [protected]@gmail.com
My mobile number is [protected]

Thank you,

Omar Jean Sakr