You can try and talk with delta9vapes and see what they know...if they play dumb you may have to get an attorney involved...

in the future one has to make sure that all relevant domain names are gobbled up so they can redirected to ones main sales page...

Ultimately it will boil down to when and what trademarks were filed for the name "cannacig"

Although i am not attorney...so i don't know all the innerworkings of that type of thing