Failure to cancel my contract and still charge me.

<p>I have a Telkom mobile contract which includes 2 numbers and I reached my 24 months. I wanted to discontinue my contract as I completed the 24 months and I was moving overseas. I went into the Telkom mobile store and I was told that I must fill out a cancellation form and send it via email, which I did. I sent the form on the 9th April and I am still waiting for it to be cancelled. I am still being charged for this!! I have called the "help" line where no one seems to be able to take responsibility for it as well as I have contacted Telkom through Facebook with the same outcome. Can someone please fix this mistake! It is not my job to do it and I am paying for your incompetence. I am assuming that it can't be that complicated to cancel an expired contract.</p>