Bad attitude from manager and staff

i went to Capitec today to get help. as i got there my bank statement was missing one page which showed my 3rd salary into my account. i was with a friend, so i left went to another bank to get the proof of banking, as i got back, the lady who was serving me was serving someone else, she told us the next free consultant would help us, but she did not as she helped someone else as she said they use a numbering system. so i sat down and got another number, as i was getting helped the lady said i did not proof of residence,but she did not check all my documents as my proof of residence was on my payslip. when i stood up that is when i realized my proof of residence is on my payslip. just as i went back to her she called another number and the person she called was not sitting down as yet. so i told her that my proof of residence is there and that she did not check properly and she told me to sit down and get a new number again, in a bank that is full. then i asked to see the manager and the manager shouted at me, saying he will throw me out of the bank and that he is busy. he did not even want to hear what my complaint was.