Paytm Mobile Solutions — wrong product supplied and no cashback has been given for 10% on first upi

I have ordered fabstone blue raglan hooded t-shirt from paytm app of rs. 368 including shipping charges order no. [protected] which has been delivered on 30/08/2018. But when i opened up the box it was wrong product.. They send b simple t-shirt which is different from the image.. No hooded nothing... Also they have not given me credit of 10% cashback on first upi transaction... I contacted paytm several time they said it will be processed after 3 days now after wasting lot of time they are saying i am not eligible for this... How pathetic service is they are providing... I know it's my first transaction i'd not they should provide me details which was my first transaction from this upi... They have wasted lot time... Now as a compensation i need my whole order amount back or same t-shirt free of cost... They have wasted my lot of time in this... Kindly do the needful...