Disappointed Customer

So I have a contract with Cell C an I transfered funds out my account to put back on the 27th when the debit order goes off, but i transfered it late an missed it.. So on the 30th i called cell c an spoke to one of their agents an made payment arrangements for the 31 money was in my account from the 27th, but after i missed the debit order date.... But to date nothing went off... So i called in today an thr agent tells me it did not go off because of insufficient funds which clearly is a lie, so was not listening to me an i was getting highly irritated because she was talking an not listening to me... Becausr of their *********** staff i must suffer... This is the second incident i am having with cell c... They becoming very disorganized.... Bad customer service