Unauthorized deductions

<p>Lost my job and I couldn't make payments for 4 months, when I got employed I made arrangements with vodacom to cancel the contract and pay R500 a month until the cancellation fee is paid, from May 2016.</p> <p> </p> <p>I did exactly that, however on the 27/07/2016 an attempt by vodacom to deduct R2594.64 was made from my account without agreeing with me.</p> <p> </p> <p>Today R477.05 was deducted from my account. Why do you bother making arrangements if you will do as you please afterwards.</p>