Order cannot be placed without a phone banking app.

I placed an order and tried to pay by eft only to be told by the office that if I do not use the phone app for the bank, I cannot pay.

I then loaded credit card details and clicks refused the payment as well. I have checked the details and also I paid the amount on the order to ensure there were funds only to find I had overpaid my credit so there was what I can use plus extra so there is no reason why the payment was rejected whilst ordering. I was told to reorder as they cleared my order, this I did to no avail, again the same result. How on earth do I pay for my order which is over 2k . I would like a response today please and not from a clerk but from a manager or director as the clerical staff have no idea how to deal with this.