FNB HOLDING FUNDS FROM SARS

Sars refunded me on 19 September 2020 and on 21 September 2020 I discovered that I don't have funds in my account anymore, subsequently I contacted FNB and they informed me that sars instructed then to hold the fund. I then contacted Sars call center for clarity, sars indicated that they did not instruct fnb to do such a thing. I then contacted FNB ***** department they still insisted that it's sars instructect funds pending investigation which might take 48hours to conclude .

My frustration is that I've been send back and fourth by fnb and sars. Worse sars still insist that fnb they are the ones holding the funds. Please anyone advise how to go to resolve this incidents. Where I see it fnb is falling their customers because they don't even want to contact sars to resolve the matter. Now I'm off the view that fnb system somehow its failing their costumers.