Upgraded with phone of lesser value than the one owned

My husband bought me a Redmi Note 11 Pro phone on contract at Vodacom Centurion Mall in 2022. On the13 August 2023, the phone started losing network and I booked it in for repairs at Vodacom Centurion Mall. Vodacom said the phone experienced out-of-the-box failure and they would replace it as it was still within the warranty period. I then requested them to order me the same phone I had and was advised that Xioami no longer makes them. They would order me a later version. I was then called by the store to collect the order and I collected it on the 9th September 2023. My husband took the phone back on 14 September 2023, 5 days after collection as we realized that I was issued a Redmi Note 12 instead of Redmi Note 12 Pro which was of a lesser value than the one I owed. We noticed this when I couldn't use certain features on the phone and that the phone battery was dying within two days of charging even though I had not yet loaded my information. Mr Francoise who was the manager on duty refused to accept the phone and advised that 7 days had passed after the phone was collected. We showed him receipts to prove that he was dishonest, and he ignored us. He still refused to assist us. My husband left the phone at Vodacom stating that he can not continue paying for a R7500 phone while I owned a R5000 phone. This is now the second month he's paying for something we don't have.