Still billing after cancellation form was emailed

I have emailed my cancellation form from my personal email linked to my account. The 2 year contract has expired (2.5gb data sim only). I'm still being billed for the data contract which I cancelled 2 months before the contract was supposed to end (as required for cancellation).

I then followed up more than three times, wasting more money (read time spent talking to your call center) . I spoke in order to Sekory Kenosi, Elsa Samuells and then Jade Seekoei. I followed up more than 72 hours after later, after the cancellation email was sent and followed up with the call center. I was then told by Elsa, Sekory did not open up any actions whatsoever on the system (this call being less than a week later). Then on my third attempt, really pathetic service, nothing has been done and Jade did also nothing after I told her my history attempts in cancelling a minuscule R100 contract.

My next contract, hopefully still not being billed by your company after the contract expires , will not be at Telkom Mobile.

In summary, I danced to your song of filling in a form, which by contract should expire on its own, emailed it, followed up more than three times with Telkom Mobile call centre and still didn't get the debit order removed from my account.