FNB freezes our account for over a week, this could sink us!!!

Our Bussiness has been very badly hit by Covid due to our dependency on tourism. This has caused us to be very proactive in our decisions. We therefore rented our home and moved into our workshop, closed one of our shops and reinvented ourselves and opened a Deli in an excellent location , this with great difficulties due to the lack of finances and resources. We did this with no help from the banks or any other institutions but rather with the help of family and friends. We have only just started trading in the last two weeks with huge difficuties and set backs, and to top it all FNB freezes our accounts , this is jeopardising our chances of survival. This is how the best bank in the country treats it’s customers, at a time when we as entrepreneurs are struggling to keep our economy going and put food on the table of working class South Africans, shame on you!!! I’d like to know what we should have done in these circumstances, where did we go wrong according to FNB? Over the past week I've made every effort to resolve this, writing to several of the consultants going into the branches to see our Bussiness manager etc, I've even sent through an invoice for an order that we are currently manufacturing and for which we are due to be receiving monies, hoping to negotiate a payment in the next few weeks rather than now. As right now we need to prioritise the payment of our rent and suppliers. I have been shown absolutely no understanding or guidance and in most cases we haven't even had the courtesy of a response!!! We are trying to survive and help our staff of 20 to put food on the table and our banks do this to us, in a time of such great need. The bullying tactics have been staggering to us!!!