Shady tactics at Vodacom

I was not able to pay my account at the end of May since I'm having financial difficulties. So, how is my account more than double the amount just five days later? I am trying to get money together so I can pay before the end of the month, but why are you doubling the amount if the payment is just five days late now? If you keep adding to this amount before I can make the payment, I simply will not pay again, and I will also report you to the consumer ombudsman. This is utterly ridiculous. This is the first time that my payment is late, and this is not the way you should be responding to it.