Bradlows poor service and rude consultant's

I recently opened an account with Bradlows, Overport, dbn. It was a good experience, the consultants are kind & friendly. However, the call center agency's are appalling.

Being a first time client, I let them know that I did not want a debit order on my account. I explained that there may not be funds in my account when the debit goes off so I'd rather make EFT payments. This would enable me to actually pay more and maybe pay off my new account sooner rather than later. However the consultant, Inmihloti, her tone was not that of a consultant who wants to help you. Her tone of voice was condescending, rude and she sounded annoyed with having to deal with someone. She told me that I signed a contract to have my account debited by Bradlows and that cannot be changed (I'm paraphrasing here). My annoyance got to me because instead of trying to help me she was basically telling me that I do not have any choice and the debit order cannot be cancelled. Because I was I. The store, I told the consultants what this rude women had said, and when I began to speak to her to relay what the consultants had said, what a surprise !!!?! This rude women cuts the call.

I want to pay my account, this is me making sure that it gets paid because I know that it the debit goes off an there is no funds, it will be my fault. So why does Bradlows have consultants that are not helpful????

Am I wrong to make arrangements beforehand? Do I not have the right to stipulate how I want to pay my account? What happened to consumer rights?