Marriott Jaisalmer - Bill Dispute

I was there for lunch on **th August **** and was attended by me. Pankaj at the restaurant. I told them that I'm a defence personnel,so i was offered **% discount on the bill. But the first bill they produced was not including the discount, which i realised after making the payment, to which they again generated another bill with discount and i paid that again and was told the previous amount will be credited into my account within one or two hrs. Today is **th September till date the amount is not credited. kindly look into the matter and resolve it.