professionalism,incompetence

my debit order with cell c is supposed to go through on the 25th of every month, the 25th October was on a Sunday and i got paid the 24th Saturday my debit order didn't go through and i called cell c on the 26th October to ask why debit order didn't go through and i was advised that they do not debit on a Sunday, and the lady advised that the debit order shows that it has went through at around 4am that same Monday morning (26th) and i advised her that i have my bank statement in hand and nowhere does it say that debit order went through and i have not received an sms notification and I said maybe sms delayed as well, and the lady insisted that debit order went through. in November i receive my statement and it says i'm in arrears with the debit for October, when i called them to find out what's going on,next lady to assist me says it takes 3 days for the debit order to process(meaning i should have left the money in my account for 3 more days) which the 1st lady never explained, then my problems started with cell c and since then i have been sent from pillar to post with no one assisting me except for bonisiwe who works in KZN head office she made sure to escalate my query. SAD