FNB froze my account

I recently opened a FNB account and started using it in April 2018. Yesterday the 3rd May 2018 i receive and email stating that i need to complete a form for consumer foreign tax that i need to complete within 15 days or my account will be frozen, i did not complete the form hence i dont pay any tax and i called nut waited on the call centre for a long time i eventually ended the call. So today the 4th May 2018 i go to the ATM to withdraw some funds only to receive a receipt stating that my account is frozen. I cant even get home now since i need cash to take a taxi. This is just ridiculouse, your call centre is closed so how will get any service?????.