Over Billing of Cellphone contract

<p>i entered into a cellphone contract for a iphone 6 on smart plan 50 for R349 p/m. i was billed R947 p/m. my statement reflects that i am on a smart plan for R429 p/m for an iphone 6s. i queried this matter and was issued with two reference numbers. i called the support centre and was told my case will be escalated and i will be contacted within 3 busines days. i am still being billed an amount i did not agree to and a phone i am not using. i would appreciate it if this matter was attended to as soon as possible, telkom is quick to debit clients but not quick to help them.</p>