Agency taking huge fees. Can I delete my account and make a new one?

[CutePetitePrincess]

Hello Everyone, 
I'm completely new to this and happy to see there is a forum for support ^^ 
I signed up to Adultwork via a modelling agency (Daniel Strictly).. actually I entered this knowing absolutely nothing about camming work and I assumed the agency I was applying for also did the camming inhouse but as it turns out, they are essentially a third party that "manage" my profile for me (which actually makes it all more awkward because I cannot leave feedback, respond to emails,  pay for site positioning or edit my profile myself so it causes more harm than good!) 
I only receive back 40% of what I make on Adultwork (understand there are Adultwork admin fees and some taxes but it seems they are taking a decent chunk of what I make for doing nothing!) 
I would prefer to manage myself independently and I'm just looking for some advice - Do I need to wait for the modelling agency to remove my profile before I can re-register directly with upwork? Will it be easy to get the current profile removed ? 
Not sure what happens with respect to pay. It's a well-established agency but I'm concerned that they will not pay me for what I've done if they see I'm leaving them. 
Thanks
xx