Hi Morgan, Sorry to hear that things didn't work out, with whoever they are.
Moving you're business catalyst website to a new provider is quite straight forward if you're still on semi-decent terms. The partner you want to move to needs to provide you their partner code. The current (ex) studio then places the code into a certain page in the CMS and it'll transfer the site over automatically.
For more information on this, you can see this page: Transferring sites between partners
As a suggestion, it maybe worth creating you're own partner account and hosting the site. You can then provide access to the CMS as and when you want agencies / freelancers to work on your site.