Vodacom is *****ing from us

In Dec 2024 Vodacom phoned to upgrade the packages stating the call that the upgrade will not cost us anything more. They send us two phones which we did not want. Come January 2025 suddenly there was an increase in bill and they were charging for the two phones. We have contact Vodacom many times - they said they will retrieve the recording and come back to us. We phone on a monthly basis but receive no feedback. Vodacom asked us to return the phones - they were still in the original packaging as we have not used them - phones were returned on 2 September 2025. Still no adjustment to our account. We are currently paying Vodacom for services we don't use and a package we did not request. Current package have 50GB data a month of which we use maximum 5GB as we have Wi-fi both at home and at office. Vodacom delay the process and every month they debit our account with the high amount.