No arrangement from Wesbank

Our business is currently down paying 3 cars with Wesbank. We fell behind on payment due to the economic mess everyone is currently experiencing. We arranged to make a bigger monthly payment in Dec 2021 when Wesbank called us. SInce Jan 2022 we have been paying extra in order to catch up on the arrears. I have received a mail from a woman insisting that Wesbank wants all the arrears money NOW, by tomorrow or they will send for our cars to be taken. She is unwilling to make any arrangements and Wesbank just says there is no arrangement, yet I have been paying extra since Jan. Keep in mind this is not luxury cars, this is cars used in our business that are already struggling. Is Wesbank not open to arrangements? Why are we being bul**** when I am putting in effort from my side to pay you as arranged? Please contact me as I would like to make an arrangement if Wesbank is willing, if not please confirm this, otherwise I will have to make contact with the Ombudsman.