Dear venky57,
Yes, we do have Buyer Protection. You can view more details here - http://pages.ebay.in/help/tp/esppp-process.html
I request you to please follow the process detailed above.
We constantly review our user activity, and remove users who we feel do not fit into the eBay community. This could be the reason why the seller you have purchased from is not part of the site now.
Thanks and Regards,
Rohit,
Community Development Team
Thanks and Regards,
Rohit,
Buyer Engagement Team