Huh.
Consumer Reports (CR) has released a mobile app (iOS, Android on the way) that shows what data companies collect about you, then allows you to have CR get the data deleted:
https://www.permissionslipcr.com
Essentially, CR will act as the data ombudsman for anyone who asks them to. I love it.
CR is a non-profit that accepts no advertising or corporate sponsorship, and they have a great reputation. It's a superb choice to take on the data capitalists.
US-only (don't @ me).
You can also use CR Permission Slip to send an enforceable opt out of sale or sharing -- you do not have to delete your entire account to stop a company from transferring your info.
More good news -- the AG of California pays attention to businesses that fail to handle authorized agent mail properly ( https://oag.ca.gov/news/press-releases/ahead-data-privacy-day-attorney-general-bonta-focuses-mobile-applications%E2%80%99 ) When we did the agent study that led to Permission Slip we got uneven compliance (and had to send postal mail in 1 case) now it's much better
OAKLAND – Ahead of Data Privacy Day, California Attorney General Rob Bonta today announced an investigative sweep, sending letters to businesses with mobile apps that fail to comply with the California Consumer Privacy Act (CCPA). This year’s sweep focuses on popular apps in the retail, travel, and food service industries that allegedly fail to comply with consumer opt-out requests or do not offer any mechanism for consumers who want to stop the sale of their data.
VM (Vicky) Brasseur
Joaquin 
Don Marti