FNB **** to my client

I am highly disgusted with FNB! First I was struggling with strange debits on my account, finally I got them to freeze the account until I can go to the branch to sort it out. I notified my clients to use my other account until further notice. So one client accidentally made a payment to the frozen account, but the payment bounced back, which it is supposed to do. Then another client also paid into the frozen account but that payme t was successful, which is supposed to be impossible since the account is frozen. So they sent a recall letter to the bank and paid to my other account. Which is all fine. Then the client asked me that when the bank contacts me they will need approval to reverse the payment. Which is fine... But now, wonderful FNB sent the client an email saying I rejected the reversal so the money will not be returned! FNB NEVER SPOKE TO ME!! I received no call or email and yet they answered my client. No the client wants me to explain why the money will not be returned. So FNB is making me look like a *****. Because who is the client going to believe, me or the bank? Because why would the bank lie? Which is what I also want to know! If they couldn't reach me, fine! But to send my client an email outright lying is unprofessional and disgusting and puts me in a Terrible position with my client!