Worst experience ever

I have been on the N1 City Goodwood walk in centre been waiting for over 2 hours to do a change of ownership, there is still ten people that need to be assisted before me, I am ticket 642 and they are on ticket 632. The tellers are empty staff is walking up and down like they don't see us, tried to escalate to a manager apparently "they are doing their best" call centre has no complaints system in place. Worse experience in any customer journey what a way to ruin one's day.