Delhivery – I did not get my product

From the date of 1st july I am waiting for my product. but still I did not receive my product.
Whenever I call or contact “Delhivery” they told me that “SIR YOU WILL GET YOUR SHIPMENT WITH KIN NEXT 48 HOURS”. From the last one month I am trying to get my product. but “Delhivery” is not going to take any action about my product.