metrobank scam tactics

We made the first deposit of 50000USD on 23rd March, and then we found that the transaction conditions were not good, so we decided to withdraw the money immediately. Then we received a call from the Metrobank and he asked how we could continue to trade with them. They offered 70% rebate and swap free trading accounts, so we started trading. At first we lost, thenwe continue to deposit 50000USD on 19thApril and another 50000 USD on 27thApril, a total of 150000 dollars. After that, we started to make profit by predicting the market direction correctly. So we began to make some withdrawals: 20000 USD on 4thMay, 30000 USD on 9th May, and 50000 USD on 14thMay. All of these withdrawals were successful, but after that all the withdrawals were rejected. From 21stMay, they said they needed to check our trading accounts. During this time, we tried to communicate with Metrobank for multiple times, but every time they just responded perfunctorily and delayed the withdrawals.