Paytm — I have not received my order

Address:

Chennai, Tamil Nadu

Dear sir, I have order Samsung power bank and paid 399/- through kotak bank online. i was also offered 30% cash back on this order. my order is expected to deliver by 16.april.2015 but till today i have ot received any information. my order number is[protected]. may i know when i can expect my order deliver, are you bound to your genuine services, compared to other services, i have expericened very worst show from you.