Standard bank business account funds frozen

On the 8th of February I've discovered that my account was blocked by Standard Bank due to a malicious client claiming suspicious activity on my business account. Due to unforseen circumstances I couldn't fulfill my duties as company owner for 6 calendar days and hence my client thought that I'm not going to deliver his product. The client is unwilling to go to his bank (FNB) to retract his statement which has placed me in the position where I can't operate my business, can't pay wages and can't supply the product to the client. I've been to the police station twice to get affidavits for Standard bank as requested by them. I'm at the point were I'm fed up with the client's ****y attitude and decided to refund him. On Standard Banks instruction I submitted an affidavit stating that Standard Bank can refund the client on my behalf from the funds in my account but only if they receive communication from FNB that the case was retracted. After almost 2 weeks I'm still at square one. Standard Bank isn't standing behind their clients. None of the supposed investigators phoned me in the past 2 weeks. What do I tell workers who can't feed their families. What do I tell clients that I can't services do to this. Get my funds released! I more than happy to move to a different banking institution if this is the treatment and lack of support I can expect from Standard bank.