Cancelled Debit order no notice given & charged

I have been with Vodacom for 10 years without a problem until December last year when my account was debited for R600 (my normal bill is R94.00) I have been to various Vodashops to sort the problem out, everyone has been very understanding but nothing has been done. I went to Vodaworld last week only to be told that my debit order has been cancelled, in all the time I was there I was not told that I was going to be charged for the cancellation of the debit order.<br> <br> The final out come is that my email has now been cancelled as I owe approx. R195.00 to Vodacom. I am a pensioner, my finances are very tight, I was able to meet my monthly debit order but no one can explain how my bill shot up to R600.00.<br> <br> I would really appreciate it if someone could please help me sort this problem out.