Device is paid up and I am still being charged for it!

<p>I have 2 iPad contracts that came to an end in April already! On my debit order date in May, the full amount was taken off! How is it possible to keep charging for a device that is paid off??? And then I phone them so that they can sort it out immediately so it doesn't happen again on my debit order date this month, but they just tell you it will take 3 days just to log your query and have it assigned to someone without it even being dealt with, which means I would probably first have to just deal with another overcharge! It's absolutely the worst customer service ever! I need this sorted out as soon as possible and just know that I will never recommend Telkom to anybody! </p>