Paytm — cashback didn't get after also applying promo code

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paytm

Reg. Mo. No. [protected] i have placed my order my order no. [protected] with rs1175+ 405= 1580 /- on date 10 august 2017 after received my order i have not received cash back money refunded in my paytm cash account. I called to your customer care executive but he did not respond to my satisfaction please be quick to refund my monet i my paytm account. Hope for positive response. Sunny