You, by having number in a system, are not able to show asset. For e.g if you have number 1 attached to the addresses, compared to someone that has 0.0001, you are not able to show a thousand times more zeros and ones in the system in your possession. Digital asset is zeros and ones. So you own no digital asset. You just have fake number that creates the illusion of asset quantity, as described in OP. Simply, you're the victim of a scam.
You just proving that you have no idea at all how Bitcoin works. Sadly, what you've described is a bank account. Now ask yourself the right question...
You're the victim. Try to accept explanations of people that are trying to help you.