Worst Service from Standard Bank

I have a Business account with Standard bank. My company "Singo Pty Ltd" recently rendered a service for "Adam Rich Pty Ltd", which then paid an amount of R50 000 into my standard bank business account. The bank took their charges, the amount that was on the negative aswell. My problem now is that they have put the account on hold due to "checking if there's no money laundering going on", I have called them several times and they kept transferring me to different departments, and wasting my airtime, what bores me the most is that my employees haven't been paid and the bank "Standard Bank " is still deducting monthly fees from the amount whereas the account is on hold and under investigation. I've received the worst service ever and I'm considering changing banks after this bad Experience from them "Standard Bank"