No communication

I have been banking with standard bank business for the past 5 years . I've never complained about their service ever before . But last week a client of mine called them to reverse a payment and my account got flagged as ***** . No phone calls no messages they just blocked my account. As a business owner and having staff to pay and suppliers to pay . How does one function. It was a very small matter that had been thrown way out of proportion. Who does standard banks loyalties lie with their client or their clients client. I'm absolutely horrified at how poor their communication skills have become . I dont feel that they value my business ...