If there is no Termination Provision you might have grounds for improper termination. Also, it would depend on the terms of the Agreement and also...

Each of the questions you asked would be addressed in the Terms and Condition of that particular site. Having not see the T&C's it is hard to...

Can i release my own music that i payed for all expensive while the label i signed on did nothing

You have much that is packed into that one paragraph. Everyone agrees that the first place to start is having an experienced entertainment law...