When Facebook bought WhatsApp suspect intentions black Zuckerberg and company do our data. That came true a few months ago when they changed the terms of WhatsApp, which alerted many organizations that seek to protect our privacy. Today the European Commission has asked WhatsApp to stop sharing data with Facebook.
Unfortunately, the Working Group has no other authority but to advise and recommend to the company owned by Facebook. Meanwhile, WhatsApp has already issued an official response that says they are working with protection authorities to answer your questions.