I performed transaction on 23-11-2017 on Cryptonator, buying BCN (Bytecoin) for 0.17 ETH approx. I received only 8059 Bytecoins, which means an exchange rate of BCN/ETH 46K. Whereas, the exchange rate on that day was 236K . They stole approximately US $65 from me.
Best part, they did not even generate a transaction receipt/number for this exchange. And they are not even responding back to my emails. Snapshot of my account history is at this link:
https://imgur.com/a/mgclW