Once upon a time I placed a ordered with PayTm.com, they have delivered me damaged product. from that time onwards I wont use this online website.
I online prefer Amazon.com that it, they have very good cash back policies, if the customer wont satisfy with the product, they return the product to amazon and they will give your money back.
I purchased one LED from amazon I am very much satisfied with their service. but if you go with PayTm, I will assure customer will face problems, some time we may lost our harden money so please dont go with PayTm.com.