Telkom *****ing from poor people.

I upgraded my device on the 26 April 2021 and decided the next day I would rather take another model phone than the one I had originally picked. I returned the device unopened on the 28th April 2021. I was still within the cooling off period and my billing cycle had not closed. However, Telkom still charged me for a device I did not have, even though I received proof of cancellation. They are ******** poor South Africans of their hard earned money. I need my money back please