The worst of the worst experience

I really need an explanation,a better one from their banking app consultant. How do I wake up with over minus R2000 from my account,the app showing transactions of 29 and 30 December now being processed.I am talking about POS and online purchases here.How and why are this being processed on the 22nd of January, like 24 days later,when I make purchases it says money reserved and my balance will reflect as such.How sure am I even that really those transactions were never deducted,do I have to take a calculator now and calculate every single transaction against money I had in my account. And who is responsible for this mess,Is it my responsibility now as a client to take a calculator now and then check if transactions have been processed .What is the use of electronic / digital banking if it fails on such small matters,How are we to trust You as a bank with huge monies now,And now I have R2000 out of my account, unbudgeted for,I am the one left in deficit now because of someone 's mess.This is totally unacceptable really.Give me back my R2000 rand😣