Piece of crap.
I understand that the Wizvape is a disappointment and it might be ineffective, but let's stick to genuine factual criticisms and not resort to name-calling. The indication here is that this manufacturer is genuinely trying to produce a working vapourizer and this isn't just a scam, since they have offered refunds. They wouldn't be the first to have malfunctioning units at start-up.
This caution is meant for everyone and not just you.