FNB freezes business bank account despite all information sent to them - FICA/KYC

In late June FNB sent me a request to update FICA details for my business bank account which I have had with them since 2014. I sent them all the required details. An agent called me and needed some changes. We did some back and forth, I got everything together and sent them the required documents on 8 July. I never heard back from them (as is often the case) so assumed everything was ok. Yesterday I received an sms and an email in the morning saying my KYC details on my business are not up to date and they will be freezing my account if I don't sort it out on that day. I spent the whole morning sending them everything they require, lots of time on the call center and additional information etc. No replies to my emails in the afternoon. Now they have frozen my account. I am absolutely disghusted by this treatment of a customer that they have had for so long, especially given the fact that I have done everything in my power to give them everything they need. Shocking service. It is probably going to be a mission but I am done with FNB and will be looking for an alternative business bank immediately.