the fact that 500casino did not want to withdraw money and was simply stalling for time. it is a fact. Only after complaints and coverage of this event did they withdraw the money.
I advice that you lock this thread now as advised to you, create a scam accusation in the scam section post all the relevant proof and screenshot.
You mention that you are going to create a video then make it look good so we can all discuss about your case and your proof the discussion is turning into a debate about methods, concentrate on your case this is a big amount so your focus if you to proof that you have been scammed if you Metaspin really scammed you.
Its not benefiting your case if you delay creating a scam accusation in the right section.