Paytm has started shopping on there app and its a wallet app so they should be in that limit only. Lets talk in points that customer srvice are like that if you ordered product if they shipped other product or damage piece then on they will change of you dont like that product that does not matter.
Product quality differ from.company to company and money also plays important role in these high value good product.
Delivery time is more then expected and they charge shipping on every product rather you buy product of 100rs or product of 1000rs.
Most all major companies are attaced with these but they increased there value and give cashback.