The teacher often asks me to deposit money by phone call

I feel that I have been deceived. The the initial recharge of $500 to send $190 requires me to trade for 19 lots,which means that the deposit is accumulated a total of $1000! The teacher called and said that I have too little money to trade normally. I feel that I have been deceived. The spread is also big,with no profit space at all.Gold can only be limited to 0.1 hands or more,which leads to forced liquidation and great losses.