Bad planning on Business Operation.

I have been standing a Nedbank Promenade line to change my number for over and hour and half. They have 2 with a line of 50+ people in the line. People are getting aggravated by the slow service of the consultants behind the counter. They have elderly people standing in this queue for longer than what I am. The branch manager should really looking at changing the way they operate with assisting clients. Everything gets done at the teller counter. Collection of cards, changing details, deposit and withdrawals etc. They should really simply their operation. I think personally this is my worst experience in a bank. Why do you have to come into a branch to change your details all the other Banks you call the call centre and you can change it. This is really bad