African bank account blocked by FNB

So, I have an African bank account. My fiancé who banks with FNB, transferred R420 into my account last week. He then had a dispute with a client who blocked his account. In turn, my account has been put on hold.

I feel this is extremely unfair because I have nothing to do with their dispute. My bank refuses to lift the hold since they said that FNB should email them to do so, as they received a request from FNB to put my account on hold.

I would like this resolved quickly as my son's birthday is on Saturday, and I need to access my savings account.

I have been sent back and forth from African bank, and I'm just so drained and stressed.

My fiancé and his client are busy sorting out this whole mess, but I'm unsure how long it will take, and in the meantime, myself and my kids are suffering because of this.

I contacted FNB on Facebook. I was given a number that I should call.

I tried contacting them but have been placed put through different departments 3 times now, after being on hold for 25+ minutes. Every time someone picks up they say I am at the wrong department and then transfer me. I literally cannot keep wasting my airtime like this.

I really need help to sort out this matter urgently.

Please advise what I can do.