I ordered an ounce of shatter from a vendor and only received two grams in the mail... the vendor has yet to answer me although it has only been 12 hours. What are the possibilities that can come from this because I don't want the vendor to try and provide some bullshit saying he sent a package with an ounce and then provide tracking proving it showed up when it was only two grams. Is there any way to prove it was only two grams or what?
Anything can happen. You should be asking, what will happen?
Depending on the vendor's reputation, you could be out 26.4 grams. He can easily claim that the package was delivered, because it was. He can also very easily claim there was one ounce in there, because why wouldn't there be? Thats what the listing was for. This is all assuming he has good feedback.
The burden of proof would then fall upon you, to prove that there were really only two grams in there. Which is nearly impossible to prove. I cannot think of a way to prove it myself.