Well, I dont exactly know how to get it serviced if something go wrong..
However, if something go wrong in my benro tripod, I would be sending it to Gaffarbhai, from whom I had purchased.. Also, Gaffar Bhai & Sons is Sole Authorized Distributors for Benro Products in India
About Smartshoppers, I dont have any personal experience, but few of my fellow photographers in other forum had quite a bad experience with them.. wrong item, gray item for price of billed, taking money and then saying it out of stock and similar issues are reported by them... so you should recheck before buying from them.. specially when you getting your stuff shipped