Froze account with out notice over fica doc

I am completely outraged by standard bank I have been a loyal customer for years and for them to freeze my account without so much as a phone call or notice is ********* and disgusting. All I got yesterday was an sms reminder to Fica my account (nothing about freezing my account if i dont) and today they freeze it. Due to my account being frozen I was left red faced at a petrol station unable to pay for the petrol that was filled in my car. If this is the way standard bank treats it's customers I am definitely changing my account.