I am pretty sure OP was hyped and didn't do his own research in investing in bitcoin and ethereum and because he ends up at a loss, he is calling it scam. I believe a lot of people was hyped last December and many even borrow money just to buy bitcoin and ends up having huge debt because they can't pay back their debts yet or they may already paid at whatever amount they can sell their coins. Calling something scam just because you didn't take necessary precaution and didn't know the risk involved when you decided to buy the coin is just being careless.
OP is impatient too and think maybe that investing in cryptocurrency is just a get rich quick scheme. At this rate, OP may have been in rage already as the price is not yet profitable for him but if he just have a rational mind and trade then maybe he was already able to get back what he lost.