Paytm — No response from paytm employee after delivery of product

Address:	Gautam Buddh Nagar, Uttar Pradesh, 201301
Website:	paytm.com

When any 1 make a call to your tall free number there is no response from that number, it always says that number is busy. So, there no need of that number. Then why are you providing this facility, If you don't want to receive a call form your customer? I am trying this call since 3-4 days but still there is no response from your side.