It doesn't sound like this "source" is too trustworthy. I would stick it out to find another source that way you don't have to worry about getting busted for buying or get scammed for your money, by way of phony juice or just never get your shit. These guys are just trying to help you understand you can't just believe one person when it comes to buying this stuff. There are so many people making this shit up in their basements "laboratories" lol. It can be un-sterile, or just fake and cause a more serious chemical reaction with your body. Hang around here, get to know the people and wait around. I am sure that you will find what you are looking for.
Good Luck