I was targeted with a cryptocurrency mining investment opportunity. My initial investment was $100. However, the 'company' began demanding escalating payments under the guise of 'profit fees' and 'premium membership subscriptions.' Each time I inquired about potential future costs, they assured me there would be no more. Yet, immediately after each payment, they requested more. This cycle led to a total loss of $950. Now, they're holding my funds hostage, demanding an additional $500 for release. They instructed me to purchase cryptocurrency through Cash App and transfer it to their provided wallet address. The individual who contacted me on Instagram presented themselves as a New Zealand-based investment expert.