bad service and bad attitude

I went to nedbank on the 24 June to request for an early release on my investment money him and his supervisor explained to me that they will need a valid reason for that I did provide them with the proof and they assured me that they will escalate the request to the manager for authorization and Christopher will phone me .On Monday he called me telling me that they still busy he will call again once done .Ok I waited for the call then I got missed calls without any voice messages and I returned the call and it was Christopher and I asked him why didn't you leave me a message on my voice mail cause I ddnt answer your calls as I was in training he told me that he is very busy he doesn't have time to leave messages and I know their numbers , I should have just call back . And he told me that my request is no long possible I must just put a 32 days notice on my acc. After I have submitted a valid proof felt so irritated about his service.i need my money to pay for my school fees.