Day light ******* from a teller and manager!!!

My sister deposited an amount of R4000 yesterday into my savings account yesterday at 10am. the money never reflected on my account. My sister went back again at 3pm and was told that the money would reflect at 7pm because my account is a SAVINGS account. that is BS, a cash deposit should always reflect immediately. the money did not reflect at all at 7pm. I called my prestige banker and she told me the same. My sister went back to the bank and was told that the money has disappeared. these people are refusing to give my sister back the money. it shows that the money was deposited but it don't reflect on my account. Can SOMEONE out there fix this because clearly Samantha Jackson and her manager do not know what they are doing and I want my money reflected in my account as in YESTERDAY!!!