Billed for a cancelled contract!!!!!!

I have a serious complaint and need this matter to be dealt with as a matter of urgency. <br> I cancelled my Galaxy Tab 3 with the 8TA service provider in December 2015, as my contract ran its course. The contract was for an amount of R300 p/m.<br> Prior to which I signed up for a Blackberry Passport mid last year.<br> Today after checking my bank statement it was brought to my attention that I have been debited R505 ever since I cancelled the contract????<br> This is absurd and completely unacceptable!!!<br> I called and was placed on hold for extended periods at a time. Having my second contract and entering my third year as a loyal customer I regret to inform that I am disgusted in the service that I've received and will not recommend 8TA due to this ridiculous encounter.<br> I hereby request for my Log to be followed-up with case number- ***8, as I am expecting constant feedback up until I have been refunded every cent that was taken from my account without my consent!<br> I have been paying for a service that I have had no benefit of at all. <br>