Increase in monthly bill

<p>I have a fixed contract with a softblock embedded in order not to receive unexpected / unbudgeted deductions from my account. Vodacom this month increased my bill by over 10%. I was not informed of any increases, the deduction was just done. Trying to get answers from the call centre yielded no fruit. Trying to contact their billing department, their voicepropt system is not accepting my number so I can get no clarity from Vodacom. If I don't get sufficient explanation from them I will just have to stop my debit as in my mind they are in breach.</p>