I bought something on ebay And the seller said its sending my package with a london based shipping company but i think the company is fake http://www.bluestarexpress.net, could someone please check this?
I can't view the site bluestarexpress.net as it is blocked by my firewall as being a source of malware, so that's a red flag for a start.
A check of the WhoIs information for the domain shows that it was only registered on 27/05 for a period of 1 year, which is another red flag.
How did you pay for the item? If it was via paypal then I would get in touch with them and draw their attention to the fact that the seller appears to be using a fake courier service and ask if they can do a refund. If you paid via another means (such as Western Union), then I'm afraid that your chances of getting a refund are zero, as the money will have been collected using fake identification.