In a single word, they are just cheating with the client. They are just a disguised cheater. I purchased a product, seopop from them, and found it is useless and not provided the advertised product (features). After getting this useless product, I get back to stacksocial.com and ask for a return on the next day of purchase, when I get the access to the product. But they refused to refund, though seopop has 7 days refund policy!
I have the emails from them as proof.
So, please don't waste your valuable money by purchasing useless products from this cheated online shop, stacksocial.com.