Bad customer service

I went to standard bank mabopane yhooo i waited +- 20 on the que(tellers) they where 2 consultants there after they help 1 customer the other 1 went out without saying anything to us,,i waited but the line was not moving,,i went to the branch manager to try to understand whats going on,why cany they say something to us,,yhoo the manager was on her cellphone talking to somebody,,i waited 3minutes for her to finished yhoo shr never did,i ended up leaving the branch without getting any help am so angry i dont want want lie,,and its not for the first time,,,am so done with standard bank their service is very poorer