Is Capital Index safe?

I have been scammed and my money is being held in a cryptocurrency platform. At first, they pay you for tasks through Bizum, and then the tasks increase in level, which means you have to deposit money to complete the mission. This continues until you reach a point where you have no more money, and the deposited money cannot be withdrawn because you haven't completed the task. They claim to accumulate your salary until you complete the final task and can withdraw your money, but it's not true. I don't know what to do or how to recover my money.

I deposited my savings and they have not returned my money, help me because they are asking me for more, it is a scam 

Hi i am abdyul rehman from India and i have deposited $450 with capital index with raw tight spread account but then again they blcoked my account when i tried to withdraw money they simply ignored my email and one day i called my account manager he said he is no more works in that company and they scammed my money.

Lisa Anna said she was the manager of capital index and stole $30,000 from me. She told me to increase deposit again and again.