horrible pathetic service

I normally pay my subscription fee via eft and I do so every month without fail, I was never told of any increment on my subscription, I have been paying R300 all this time and never had any disconnection issues last month I paid my normal R300 then boom after 5 days my services were disconnected, when I asked them via live chat I was told that I did a short payment, I failed to understand how could that be, As I was never informed of such before. I requested to speak to a line manager 4 or 5 times and the consultants refused; I feel that I am not treated fairly. The level of service is horrible, I was deprived a chance to speak to a manager so I can raise my concerns, The consultant are extremely rude and lack empathy, I requested for a call again this morning, A call came through and they made me listen to music (voice prompts) for a good 4 minutes,