No Authorisation

I was notified by Spectramed that my scheme would change. I sent them a message stating that I did not want to change as I am a pensioner and cannot afford to upgrade. Furthermore, they have been instructed to POST all correspondence and not mail it to me as I do not have the facilities to download material, which they failed to do. I was billed an additional amount, which was not authorised by me, this month. I called the call centre and was told that if I cannot afford it I need to send proof, i.e. my bank statement. This is a total violation of my consumer rights. Spectramed failed to adhere to all my requests put in place regarding my medical aid.