Google keeps stealing my Google voice numbers, despite having a credit balance

Am I the only one experiencing this with Google?

The primary number I had associated with my cell phone had a 10 dollar balance on it, and I literally put the google voice number on presentations.

Despite logging in frequently to check it online, they sent me repeated warning emails and eventually took back the number, despite having a 10 USD balance on the account.

Now they are coming after my personal google voice number.

Google needs to be regulated as a utility if they are going to provide phone numbers. This is a huge problem.