The worst customer service from Shane at the FoneYam Call Centre

I just spoke to a consultant called Shane who was very rude on a call to me because she could not provide me with the balance on my FoneYam account. Initially, the agreement was that it will be paid off in three months which is all good and well. Upon making the second payment I am told that I should contact their customer service; a waste of my time; and they will assist me. She too, says that they do not have the three month payment option and I have to pay over a period of 12 months. Me being me and trusting that we can sort this out; she then asks me security questions; to which she says I have failed. I asked her how I have failed questions like where did I buy the phone and the last pay date; which by the way I am looking at on the receipt and she goes on to say; 'I am telling you that you failed the question. Call us later' She then has the nerve to offer me more service. What service? And does anybody know if there are people who are willing to work in that damned place. If so, may they please contact me before I implode. I need this sorted!