Deduction issues

I phoned finchoice today morning 27th March to enquire as to why the debit hasn't gone through for the 26th March and consulatant told me she doesn't know but I'm not the first customer to complain about it this month I must wait till 12 maybe it will go through and she will call be back to update me as to what's happening now in afternoon I'm receiving phone call and I'm told why havent I paid my installment yet..are you kidding me I'm the one who phone first to enquire about whats going on I hope this s not a tactic from your side to charge me interest because money was waiting for you to deduct by the 26th and still hasn't been deducted even now.