FATCA and negative IRA impact (Christchurch)

Has anyone else who resides overseas been told by their financial institution that they can no longer maintain your account because you live overseas??
Just had this happen to us from Charles Schwab after being with them for over 20 years!
I think it may have something to do with the FATCA laws??
We have IRA's which we will lose and be penalised for closing before retirement - a great way to treat someone who has served their country for Protected content !
What we are hearing is if we have a US address, we can overcome this, but are unsure if this is legal....
By all accounts, the USA expects every American who lives overseas WILL return, though this isn't always the case. Why should we be targeted when we have always declared ALL of our investments when filing our taxes?
Any info would be greatly appreciated!