Money dissappear

Someone just deposited me a R400 into my account. But it's nowhere to be found in my account. Capitec sensed me a notification that the money was in my account but it don't show in my account or on the app that the deposit was made and what happened to it. I went to withdraw it as it shows on the bank statements but it says insufficient funds. I'm so dissappointed, I mean where did the money go. I need a new bank, this is not the first time money just dissappear from my account.