FNB Loans

I asked your consultants to schedule a debit order with my new FNB account account for the 26th March 2021. The debit order did not go through as arranged and I just received an sms indicating that my debit order remains unpaid. Kindly advise what do next as I'm tired of continuously getting bad services from FNB. I was penalised last month for sending money directly to the loan account and now this??????????