Bad Service at Rain

I upgraded my rain package to the new deals available towards end of November 2024 and was advised that once i plug my new device the old contract will automatically be cancelled. I unplugged my old device immediately after delivery of the new one and everything was fine. This month i checked my billing and i am being charged R1289.17 so i called in to ask about the billing and was advised it is for 2 devices. I asked the lady to play the call recording when i upgraded my package as i was never told to call in and cancel my old contract. I have been calling rain for the last 2 to 3 weeks now asking them to rectify my billing till today i have not been assisted. Why am i being charged for something i have not used? i should be paying R629 and not R1289.17 . This has resulted in me cancelling my contract with rain and look for a service provider that will help me and not over charge me. A lady called me today and was so rude to me, she said i quote " i am trying to help you wena miss Mnguni" i even asked did you just say "Wena to me? " she said yes i am only trying to assist you ( in a shouting tone). Please feel free to listen to the call recording 23/12/2024 09:34. Please cancel my contract and send someone to collect the device. After 4/5 years of being a loyal customer this is how i am being treated? Please clear my account, i only asked for an upgrade and not 2 devices. Also check the other device it has not been used for this month.