Paytm Mall — paytm mall has cheat me.

Address:	Ranchi, Jharkhand, 834004
Website:	www.paytmmall.com

I have purchased a washing machine from Paytm Mall on 01.11.2018 through Order no. [protected] and paid full order amount. Delivery date was 05.11.2018. On day of deivery 05.11.2018 paytm mall cancelled my order himself and gave refund. After cancellation, paytm has given me a special promocode for purchasing in same category on equal or above value purchasing.
I have tried several times for purchasing in same category and equal and above value with this special promocode but not get any privillage. In purchasing I have applied for cashback that was Rs 3600. As per paytm, cashback is payable after 7 days of delivery. After 7 days, return or cancellation is not possible.
When I not received cashback then I contact to paytm mall customer care number [protected] on 17.11.2018, they replied that you have not appllied for cashback but one time we will arrange to give cashback to you, so please give some time.
After not receiving any message I have complaint again on mail and twitter but this time paytm mall care replied that “you have not applied for cashback so we would not be able to process your request for cashback.

First paytm has cancel my order on delivery date, second paytm has given me special promocode that has not given any special privilage to me and after applying a promocode at the time of purchasing, paytm mall is not giving cashback.