Praying Mantis Egg Case - 1 Extra Large Egg Case

I purchased this for my garden never before having a problem with this type of purchase. Not only did the egg sack never produce, they clearly mislead you by telling you to be patient so that it goes past the 30 day return policy to steal $60 from you!

Hobby

been months and havent seena single mantis

They still haven't hatched !!!!!

I have followed the directions and they have yet to hatch.