Never bank with discovery

I'm so disguisted with discovery Bank, I transfered some money into my savings account and when i needed to purchase something I would transfer to the transaction account and little did I know that the purchases I made was on hold even though the money got less and showed it was approved when purchased. And so I'm now left with a - 4000 that I have to pay because discovery says the money was I hold and the transaction did not go through but my money got less i saw the approved bills so where the hell is my money gosh im so upset. The biggest mistake I ever made was open a discovery bank account. So I have to pay money that is initially mine wow 👌