Telkom cancelled my device off of my FreeMe contract due to system error

A telkom store in adderely street, also known as the express store, cancelled my device off of my freeMe contract. A freeMe contract comes with a device and the price plan separately. Telkom cancelled it due to system errors in their store which they refuse to fix. The manager of the store told me last week they won't let another customer migrate their package (upgrade or lower the price plan) due to the system cancelling the device itself. The manager **** to me saying that customers can only migrate once and if the device is cancelled, we have to pay for it. That is in none of their terms and conditions at all and I read it back to front. The telkom store refuses to pay for it and is leaving me with the bill. They told me to go viral with it and not mention their names but I will. The manager also avoids me when I go back to the store as he knows im right. Oh, they are also known for fobbing their customers off.