Scammed

Bought him $60 worth of crypto voucher (btc). After I sent the code he said the code has been marked as fraud (when it never said that). I emailed the people I got the code from saying the code given was invalid, and they told me it is not and has been redeemed the day the code was sent to me. I asked him to send proof that it has not been redeemed etc but have never got it (if he wasn't lying he could send the proof in a few minutes), but he has just been doing the same thing for 2 weeks. He says he has school and he'll be free on Saturday, but completely ignores me on Saturday so everything is pretty obvious here, just avoid..