Walmart Did Not Let Me Withdraw My Winnings, Kept Asking for More!

I started using Walmart through someone's recommendation. They told me they were completing tasks and asked me to sign up on the site. I registered and deposited ₺100. In my first two attempts, I won nearly ₺5000, and the money was successfully credited to my account. Then, they introduced something called a "lucky order," which I also completed. After that, they said I needed to pay a tax to withdraw my money. I deposited $2700, but then they claimed that I completed the order late and had to deposit another $500. At that point, I stopped. If anyone has experience with this, please help. I am urgently looking for a solution. How can I get my money back? Please, I need assistance.