Money can not be traced

I have a business account with FNB and i was paid by a client on friday. I received proof of payment from the client on Friday. Up to today the money is not reflecting. Yesterday i went to FNB Menlyn and got 1 guy and 2 ladies at the entrance. the guy told me there is nothing they can do, i just have to wait. Not even an initiative to say lets check and try trace the money. Where is the money ? I still dont understand how FNB won business banking of the year. I was paid by the same client previously an ammount of around 90k on a friday and the money reflected on a saturday. Today its Tuesday and still the money that was paid on friday is not reflecting. What kind of service is this? Utterly disgusted.