Vodacom alters subs within contract period

Vodacom altered the billing of my legally signed 24 month contract without my permission. I signed a 24 month contract with Vodacom at R39 a month. Two months after I purchased the product, Vodacom decided to alter my contract billing to R45. Vodacom *******ly altered the billing on a contract we both entered into. I called the customer service centre and spoke to Bianca Khumalo, who informed that I must look the new billing prices up on the internet as no one in customer services can send me documentation. First of all, I did not sign a contract with Vodacom's Web Page! I signed an individual 24 month contract with a FIXED monthly subscription! I want to be refunded immediately for the over-deductions, back dated.<br> <br> What is the purpose of a contract if the terms and conditions can be changed and not honoured? The reference number for the dispute I logged with the Vodacom customer care centre is S3-8AB3P-PY131.<br> <br> I feel I have been ****med and sold a product under false pretences.