How do i get Away from this drug dealer?

Okay so I am sitting at a bus stop right now next to this black guy in a creepy trench coat and a mysterious red hat.He sliped me a note that read "Call me at 6 o' clock sharp tomorrow in the afternoon at the Foodlion payphone. I will be there to answer your phonecall if you want the "stuff- Lakee Incognito". He said he has every drug on the market and sells it super cheap. he also said his stuff will give me brain power. I don't do drugs or know this guy what should I do? he looked to be about 17 years old.