Debit order requested day before the agreement date

Hi I am quite disgusted at the treatment I have received from Woolworths financial since opening an account with you guys. You decide to debit my account on the 24th, where as my contract with you is to debit on the 25th, now i have to pay the bank for the returned debit order. I sent an email on the 27 Nov 2017, a NOLUVO MSOLONGILE rep**** telling me that that is not the agreement i signed, when requested to cancel the debit order, and when i responded to her, a SAMANTHA SMITH, sent me the same email i got from NOLUVO. On the 29 Nov 2017 i then EFT the installment and sent proof of payment to woolworth, to my suprise i got a call from nation wide recoveries, i then sent an email again to woolworths, and guess what, the same SAMANTHA SMITH rep**** to tell me unfortunately i will be getting calls as long as the money is not allocated!! I will be closing the account. I don't need this in my life. I am not desperate for an account with you guys.