Nedbank Closed my business Account for just banking fees of R1100

Hi Hope you are well I am dissappointed that Nedbank closed my business account just because I had administration monthly fees outstanding. It's was Covid n remember not overdraft or anything like that just fees. They credited my account for fees of R1100 and closed my account. It's was a good account before covid lockdown. I'm still owed for a event I did on the 15th March 2020 I think now they have crippled my business People are starting come around. It is embarrassing. Invoices are sent with Nedbank details please assist me someone