Dear minu75_jpr
In addition to filing negative ratings against such bidders I would also like to inform you that we have a tool called "Bidder management" where you can block bidders from bidding on your listings.
There are 2 ways to block bidders
1. Block bidders based on certain criteria like negative ratings, UPI strikes and bidders from destinations you are not willing to ship to.
2. Block bidders by User Id
As you have a the User Id's of bidders who have been bidding on your products you can add their User Id's also to your blocked bidder list.
You can activate your blocked bidders criteria or block bidders by User Id's from your My eBay - My Account - Preferences
You can also cancel a bid if a bidder contacts you to back out of the bid or asks you to ship to cities / countries you do not ship to.
Visit http://pages.ebay.co.in/help/sell/cancel_bids.html for more information on cancelling bids.
We hope this helps you have a better selling experience on eBay.
Regards,
Preeti
Regards,
Preeti