Paytm Mobile Solutions — cast back not received

Address:

Morena, Madhya Pradesh, 476111

I have book a mamy poko pant diapers packet consist of 42 in no of pads from paytm on 30 march at that time i applied a promocode giving 50% casback but the product is delivered and I could not get cashback even today so please resolve my complaint as much as possible I will be very thankful to you