Business Account - Mishandled

FNB had closed my business account whilst in arrears for 300.00 without any notification or calls or warnings.

I went into bank and they gave me details of lawyers whom I paid within 1hr. Sent payment details through to activate account.

Sent all details via mail to FNB and i was told i will be expecting a call for verification. As I am abroad I have mailed them 16 times with the number and still no response from them.