Delhi Police — 2000 is debited from my credit card, it was not unauthorized

Address:

E-33A, Bhagwati Garden, Uttam Nagar,new delhi110059

On 30th june at morning 5:20AM I refilled my car with ₹2000 and when I came home I checked my mail and 2 transaction was done of ₹2000 each, I contacted my bank also and waited this much long in a hope the ammount will get refunded but still I haven't received my money back. The petrol pump name is BP Petrol pump 24 hour it is in dwarka sec-11.I also contacted the manager of Petrol pump and he also refused to take any action.Please help me so that I can claim my own money back
Thanks