Billing Dispute

<p>I had a 4MBS 20 GB line from Telkom for R499. End of November 2016 I upgraded this line to a 10MBS uncapped line for R799...needless to say that Telkom forgot to cancel the old profile and has now billed me for BOTH of these lines for the last bill received due end Jan 2017?! Telkom this is ridiculous, if I upgrade a line why would I need both?! Pls fix this urgently as I am only paying for the R799 line I upgraded to!</p>