Complaint about FNB Grassy Park

I would like to complain about the pathetic service I received 3 times in the last 2 weeks from FNB Grassy Park Branch. The bank is encouraging me to make use of their online services. My application has been submitted for the online profile, but I await feedback from the relevant FNB department. In the interim, I need to transfer monies to another FNB account. Up to the branch manager does not want to assist with a simple fund transaction. His/her reason: the online banking system must be used. To make matters worse they assisted me with a simple transaction of this very nature 2 weeks ago... How do I get manual assistance whilst the online system is down?