MetaTrader Promised Profits to Blocked Accounts

I decided to try out the Metatrader 5 app for investing, and I came across a person named "e**" on the platform. They claimed to be associated with #First Global Investment and convinced me to deposit $100. To my surprise, they declared a profit of $100 on the very first day, emphasizing that the more money we invested, the higher our returns would be. They then asked for an additional $500, but I only sent $150. After a week, they reported a $600 profit and requested more funds. I agreed, but this time, I asked them to send $100 first. They started making excuses, saying that the market was volatile and we would make more profit with one final trade before withdrawing. Suddenly, another person called "e***" made a wrong move, and within two hours, my account balance plunged into negative figures. When I reached out for an explanation, there was no response. They had simply blocked me. Now, I'm demanding a refund of my money.