GoogleFi Phone Number Hacked?

My wife and I have had GoogleFi for almost 4 years now and this weekend my parents tried to call both of us and each of the phone calls were answered by OTHER people. A foreign female answered the phone call to my phone number, and a foreign male answered the call to hers.

Naturally I thought they called the wrong phone numbers, but I confirmed they called the correct numbers. To test what is going on, I called her phone number and the same person answered the phone. Oddly enough it allowed me to make an outgoing phone call from my GoogleFi phone number, despite when that same phone number is called it is answered by someone else. Neither of us have received those respective phone calls either. I have already checked and call forwarding is off on both of our accounts.

Does anyone have any idea what is going on? Is there any chance there are other people able to access data/information on our phones (beyond just receiving the phone calls)? This is really concerning and so far customer support hasn’t found a solution. Any help is greatly appreciated!