unable to withdraw

met Alan 林豪庭 on tinder. introduce me to Forex trading. when i got interested. asked me to open account with Poseidon through a lady customer service manager by the name of Sarah. Alan starts teaching me how to trade. Sarah send me a table saying poseidon having this promotion thing, if we put in more money into the account we can get more returns within a certain period. Alan encourage me to put in more money so to earn more returns.in the end, both of them disappear and is not contactable after this so call promotion period. And i am unable to withdraw my money.