Bad customer service

I walked into Ackermans store in Alexandra plaza, after paying my account,the cashier called tenacity staff to help me close my account. I waited while they were busy signing new clients for new accounts. The guy came and asked me what I need and he walked away without telling me where he is going. While waiting I noticed he was approaching new clients to open accounts while he has a client already. So I asked paul( who works for tenacity) what is happening? and he says "since u are shouting at me, I will not help you". He said that three times in my face and in front of the manager lufuno. Lufuno the manager does not reprimand his staff instead he says it's fine mam and walks away after he showed me that the store owes me.i told Paul that I will be going to hello Peter and he says "go ahead" and finally I managed to close my account with the help of Selby asking Tumelo to assist me, while talking to Paul on how can he walks away while theres a problem here. I will NEVER OPEN an account with Ackermans. I will even tell people around who want to open accounts at Ackermans that their staff are quick to help People who want to open accounts but give bad attitude towards people who close their accounts. Please help.