Cryptocurrency Investment Funds Recovery

I've found myself in a bind. I invested 5k into a cryptocurrency exchange and haven't seen a return. Worse, they're asking for more funds. What I need is someone who can help me withdraw all that I've invested. This is a personal matter, and I am willing to pay 3k to get it sorted.

Appropriate Skills:
- Expertise in navigating cryptocurrency exchanges
- Knowledge about online investment portals
- Experience in funds recovery

Desired Outcome:
- Retrieve all invested funds from the account

Please include your plan on how you will go about retrieving the funds in your bid. I look forward to solving this, thanks