No feedback on previous complaint

Wow, where to begin. The most recent complaint to FNB was last week and I was told that I would receive feedback in 24-48 hours, that was a lie. It’s past that time period. I’ve been trying to get my funds out of my business banking account with FNB for 2 weeks now (that is all I want at this point). I was told last week that I needed to provide source of funds which I did. I provided additional proof that the sale was completed, the person dealing with this issue WILL NOT EVEN RESPOND TO THEIR OWN COLLEAGUE! I can’t get them to give me a call and their phone has been off the hook for over a month. I only make a small profit on each sale and the funds FNB are holding is a sale that’s already been completed thus leaving me at a loss. FNB terminated my account after I provided clear cut proof of sales, my exchange got closed due to FNB initially without even making contact with me, without me even being able to provide the relevant proof. It honestly feels as if they already made a decision without making contact with me. I am utterly speechless by what’s taken place.